Tested with local LDAP configurations.
Tested with local LDAP configurations.

### What is this PR for?
hayssams Leemoonsoo Just tested https://github.com/apache/incubator-zeppelin/pull/586 with a local LDAP, works well for me. Included a sample config.

### What type of PR is it?
Documentation / Sample testing.

### How should this be tested?
Change configs to point to a local/available LDAP, uncomment the parameters, replacing the individual values.

Author: Rohit Choudhary <rconline@gmail.com>

Closes #625 from rconline/SHIRO_LDAP and squashes the following commits:

fa0b69c [Rohit Choudhary] Enabling annonymous access, commenting out AuthBasic.
ead38fd [Rohit Choudhary] Tested with local LDAP configurations.

mwkang/zeppelin,herval/zeppelin,mwkang/zeppelin,zjffdu/zeppelin,swakrish/incubator-zeppelin,HeartSaVioR/incubator-zeppelin,vrajat/incubator-zeppelin,benoyantony/zeppelin,spacewalkman/incubator-zeppelin,namanmishra91/zeppelin,benoyantony/zeppelin,yu74n/zeppelin,mwkang/zeppelin,IceKhan13/zeppelin,minahlee/incubator-zeppelin,raysteam/zeppelin,yorek/zeppelin,prabhjyotsingh/zeppelin,pellmont/zeppelin,cjmatta/incubator-zeppelin,joroKr21/incubator-zeppelin,cfries/zeppelin,spacewalkman/incubator-zeppelin,tillrohrmann/incubator-zeppelin,sergeymazin/zeppelin,suvam97/zeppelin,sctincman/zeppelin,hammertank/zeppelin,openthings/zeppelin,rerngvit/incubator-zeppelin,cfries/zeppelin,apache/incubator-zeppelin,SachinJanani/zeppelin,granturing/incubator-zeppelin,apache/incubator-zeppelin,suvam97/zeppelin,apache/zeppelin,astroshim/zeppelin,Nova-Boy/zeppelin,nikste/incubator-zeppelin,datalayer/zeppelin,prabhjyotsingh/incubator-zeppelin,prabhjyotsingh/zeppelin,Madhuka/incubator-zeppelin,r-kamath/zeppelin,herval/zeppelin,mwkang/zeppelin,namanmishra91/zeppelin,radicalbit/incubator-zeppelin,volumeint/zeppelin,rerngvit/incubator-zeppelin,hkropp/incubator-zeppelin,igorborojevic/incubator-zeppelin,Altiscale/incubator-zeppelin,MikeTYChen/incubator-zeppelin,volumeint/zeppelin,1ambda/zeppelin,zjffdu/zeppelin,vrlo/zeppelin,Nova-Boy/zeppelin,AlexanderShoshin/zeppelin,Madhuka/incubator-zeppelin,yu74n/zeppelin,SarunasG/zeppelin-oidc,Altiscale/incubator-zeppelin,cris83/incubator-zeppelin,r-kamath/incubator-zeppelin,wary/zeppelin,granturing/incubator-zeppelin,minahlee/incubator-zeppelin,herval/zeppelin,apache/zeppelin,Leemoonsoo/incubator-zeppelin,SachinJanani/zeppelin,granturing/incubator-zeppelin,brigade/incubator-zeppelin,datalayer/zeppelin-R,sohaibiftikhar/zeppelin,wary/zeppelin,cquptEthan/incubator-zeppelin,rerngvit/incubator-zeppelin,mwkang/zeppelin,astroshim/zeppelin,prabhjyotsingh/zeppelin,fogbeam/zeppelin_mirror,cquptEthan/incubator-zeppelin,lresende/incubator-zeppelin,vipul1409/zeppelin,swakrish/incubator-zeppelin,YuanGunGun/zeppelin,wary/zeppelin,openthings/zeppelin,tinkoff-dwh/zeppelin,Solution-Global/zeppelin,samuel-pt/incubator-zeppelin,namanmishra91/zeppelin,rlugojr/incubator-zeppelin,lresende/incubator-zeppelin,cris83/incubator-zeppelin,hammertank/zeppelin,cfries/zeppelin,HeartSaVioR/incubator-zeppelin,chilang/zeppelin,mfelgamal/zeppelin,yorek/zeppelin,apache/incubator-zeppelin,datalayer/zeppelin,pravin-dsilva/zeppelin,IceKhan13/zeppelin,Altiscale/incubator-zeppelin,samuel-pt/incubator-zeppelin,cquptEthan/incubator-zeppelin,chilang/zeppelin,pravin-dsilva/zeppelin,vrlo/zeppelin,onkarshedge/incubator-zeppelin,datalayer/zeppelin-datalayer,lobamba/zeppelin,jongyoul/zeppelin,openthings/zeppelin,fogbeam/zeppelin_mirror,vipul1409/zeppelin,IceKhan13/zeppelin,Madhuka/incubator-zeppelin,sctincman/zeppelin,openthings/zeppelin,RamVenkatesh/incubator-zeppelin,yu74n/zeppelin,hkropp/incubator-zeppelin,IceKhan13/zeppelin,cris83/incubator-zeppelin,openthings/zeppelin,1ambda/zeppelin,apache/zeppelin,jongyoul/incubator-zeppelin,sravan-s/zeppelin,prabhjyotsingh/incubator-zeppelin,benoyantony/zeppelin,digitalreasoning/incubator-zeppelin,ankurmitujjain/incubator-zeppelin,sagarkulkarni3592/incubator-zeppelin,brigade/incubator-zeppelin,SachinJanani/zeppelin,1ambda/zeppelin,prabhjyotsingh/incubator-zeppelin,nikste/incubator-zeppelin,datalayer/zeppelin,Nova-Boy/zeppelin,Nova-Boy/zeppelin,rlugojr/incubator-zeppelin,tzolov/incubator-zeppelin,tillrohrmann/incubator-zeppelin,prasadwagle/incubator-zeppelin,apache/zeppelin,ankurmitujjain/incubator-zeppelin,SarunasG/zeppelin-oidc,SarunasG/zeppelin-oidc,HeartSaVioR/incubator-zeppelin,zetaris/zeppelin,prasadwagle/incubator-zeppelin,cjmatta/incubator-zeppelin,mwkang/zeppelin,rconline/zeppelin,vrajat/incubator-zeppelin,radicalbit/incubator-zeppelin,cfries/zeppelin,ankurmitujjain/incubator-zeppelin,mwpenny/zeppelin-esri,sergeymazin/zeppelin,doanduyhai/incubator-zeppelin,soralee/zeppelin,hkropp/incubator-zeppelin,vipul1409/zeppelin,vgmartinez/incubator-zeppelin,zetaris/zeppelin,Leemoonsoo/incubator-zeppelin,zjffdu/zeppelin,sagarkulkarni3592/incubator-zeppelin,wary/zeppelin,nikste/incubator-zeppelin,chilang/zeppelin,RamVenkatesh/incubator-zeppelin,hkropp/incubator-zeppelin,prabhjyotsingh/incubator-zeppelin,jongyoul/incubator-zeppelin,onkarshedge/incubator-zeppelin,Solution-Global/zeppelin,benoyantony/zeppelin,chilang/zeppelin,yorek/zeppelin,samuel-pt/incubator-zeppelin,cquptEthan/incubator-zeppelin,prasadwagle/incubator-zeppelin,brigade/incubator-zeppelin,astroshim/incubator-zeppelin,tinkoff-dwh/zeppelin,apache/zeppelin,lresende/incubator-zeppelin,ravicodder/incubator-zeppelin,tillrohrmann/incubator-zeppelin,YuanGunGun/zeppelin,AlexanderShoshin/zeppelin,vgmartinez/incubator-zeppelin,zetaris/zeppelin,sctincman/zeppelin,fogbeam/zeppelin_mirror,pellmont/zeppelin,minahlee/zeppelin,rlugojr/incubator-zeppelin,jongyoul/zeppelin,cris83/incubator-zeppelin,sravan-s/zeppelin,astroshim/zeppelin,yu74n/zeppelin,zetaris/zeppelin,volumeint/zeppelin,IceKhan13/zeppelin,brigade/incubator-zeppelin,cfries/zeppelin,anthonycorbacho/incubator-zeppelin,onkarshedge/incubator-zeppelin,sravan-s/zeppelin,volumeint/zeppelin,tinkoff-dwh/zeppelin,Madhuka/incubator-zeppelin,karuppayya/zeppelin,pravin-dsilva/zeppelin,hammertank/zeppelin,tinkoff-dwh/zeppelin,cquptEthan/incubator-zeppelin,RamVenkatesh/incubator-zeppelin,jlagarden/zeppelin,igorborojevic/incubator-zeppelin,spacewalkman/incubator-zeppelin,jongyoul/zeppelin,r-kamath/incubator-zeppelin,astroshim/incubator-zeppelin,sohaibiftikhar/zeppelin,pravin-dsilva/zeppelin,jlagarden/zeppelin,mfelgamal/zeppelin,karuppayya/zeppelin,SarunasG/zeppelin-oidc,ravicodder/incubator-zeppelin,jongyoul/zeppelin,yu74n/zeppelin,digitalreasoning/incubator-zeppelin,r-kamath/zeppelin,yu74n/zeppelin,Leemoonsoo/incubator-zeppelin,sergeymazin/zeppelin,Leemoonsoo/zeppelin,minahlee/zeppelin,radicalbit/incubator-zeppelin,tillrohrmann/incubator-zeppelin,joroKr21/incubator-zeppelin,prasadwagle/incubator-zeppelin,rlugojr/incubator-zeppelin,Nova-Boy/zeppelin,doanduyhai/incubator-zeppelin,jlagarden/zeppelin,mfelgamal/zeppelin,apache/incubator-zeppelin,granturing/incubator-zeppelin,swakrish/incubator-zeppelin,vrlo/zeppelin,vrajat/incubator-zeppelin,jlagarden/zeppelin,IceKhan13/zeppelin,lobamba/zeppelin,cfries/zeppelin,Madhuka/incubator-zeppelin,IceKhan13/zeppelin,1ambda/zeppelin,karuppayya/zeppelin,jongyoul/incubator-zeppelin,raysteam/zeppelin,soralee/zeppelin,sohaibiftikhar/zeppelin,zetaris/zeppelin,raysteam/zeppelin,RamVenkatesh/incubator-zeppelin,mfelgamal/zeppelin,Solution-Global/zeppelin,cris83/incubator-zeppelin,r-kamath/zeppelin,VipinRathor/zeppelin,karuppayya/zeppelin,datalayer/zeppelin-R,zjffdu/zeppelin,rerngvit/incubator-zeppelin,joroKr21/incubator-zeppelin,astroshim/incubator-zeppelin,samuel-pt/incubator-zeppelin,sravan-s/zeppelin,VipinRathor/zeppelin,vgmartinez/incubator-zeppelin,volumeint/zeppelin,sohaibiftikhar/zeppelin,rconline/zeppelin,ankurmitujjain/incubator-zeppelin,minahlee/incubator-zeppelin,vrlo/zeppelin,doanduyhai/incubator-zeppelin,cquptEthan/incubator-zeppelin,yorek/zeppelin,MikeTYChen/incubator-zeppelin,vgmartinez/incubator-zeppelin,karuppayya/zeppelin,wary/zeppelin,ravicodder/incubator-zeppelin,nikste/incubator-zeppelin,SarunasG/zeppelin-oidc,lobamba/zeppelin,herval/zeppelin,vrajat/incubator-zeppelin,optimizely/incubator-zeppelin,cfries/zeppelin,pellmont/zeppelin,spacewalkman/incubator-zeppelin,sctincman/zeppelin,onkarshedge/incubator-zeppelin,sagarkulkarni3592/incubator-zeppelin,tzolov/incubator-zeppelin,hammertank/zeppelin,rconline/zeppelin,astroshim/zeppelin,igorborojevic/incubator-zeppelin,ravicodder/incubator-zeppelin,datalayer/zeppelin,r-kamath/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,r-kamath/incubator-zeppelin,tinkoff-dwh/zeppelin,vipul1409/zeppelin,herval/zeppelin,swakrish/incubator-zeppelin,Leemoonsoo/zeppelin,joroKr21/incubator-zeppelin,datalayer/zeppelin,sagarkulkarni3592/incubator-zeppelin,benoyantony/zeppelin,vipul1409/zeppelin,lobamba/zeppelin,YuanGunGun/zeppelin,chilang/zeppelin,VipinRathor/zeppelin,igorborojevic/incubator-zeppelin,pellmont/zeppelin,soralee/zeppelin,radicalbit/incubator-zeppelin,sravan-s/zeppelin,prabhjyotsingh/zeppelin,lobamba/zeppelin,Leemoonsoo/zeppelin,apache/incubator-zeppelin,suvam97/zeppelin,astroshim/zeppelin,HeartSaVioR/incubator-zeppelin,doanduyhai/incubator-zeppelin,VipinRathor/zeppelin,optimizely/incubator-zeppelin,Leemoonsoo/zeppelin,RamVenkatesh/incubator-zeppelin,tinkoff-dwh/zeppelin,SarunasG/zeppelin-oidc,prabhjyotsingh/incubator-zeppelin,SachinJanani/zeppelin,mwkang/zeppelin,sergeymazin/zeppelin,mfelgamal/zeppelin,rerngvit/incubator-zeppelin,lresende/incubator-zeppelin,fogbeam/zeppelin_mirror,SachinJanani/zeppelin,r-kamath/incubator-zeppelin,jlagarden/zeppelin,SachinJanani/zeppelin,zetaris/zeppelin,mwpenny/zeppelin-esri,datalayer/zeppelin-R,radicalbit/incubator-zeppelin,brigade/incubator-zeppelin,igorborojevic/incubator-zeppelin,prabhjyotsingh/zeppelin,rconline/zeppelin,anthonycorbacho/incubator-zeppelin,fogbeam/zeppelin_mirror,ankurmitujjain/incubator-zeppelin,vgmartinez/incubator-zeppelin,lresende/incubator-zeppelin,optimizely/incubator-zeppelin,hkropp/incubator-zeppelin,rconline/zeppelin,minahlee/zeppelin,r-kamath/zeppelin,1ambda/zeppelin,ravicodder/incubator-zeppelin,YuanGunGun/zeppelin,vrlo/zeppelin,pravin-dsilva/zeppelin,YuanGunGun/zeppelin,sohaibiftikhar/zeppelin,onkarshedge/incubator-zeppelin,lresende/incubator-zeppelin,spacewalkman/incubator-zeppelin,Leemoonsoo/zeppelin,chilang/zeppelin,prabhjyotsingh/zeppelin,rlugojr/incubator-zeppelin,yorek/zeppelin,karuppayya/zeppelin,lobamba/zeppelin,cquptEthan/incubator-zeppelin,r-kamath/incubator-zeppelin,onkarshedge/incubator-zeppelin,optimizely/incubator-zeppelin,sohaibiftikhar/zeppelin,vipul1409/zeppelin,Solution-Global/zeppelin,tzolov/incubator-zeppelin,SachinJanani/zeppelin,doanduyhai/incubator-zeppelin,ravicodder/incubator-zeppelin,chilang/zeppelin,optimizely/incubator-zeppelin,jlagarden/zeppelin,prasadwagle/incubator-zeppelin,mwpenny/zeppelin-esri,YuanGunGun/zeppelin,astroshim/incubator-zeppelin,tzolov/incubator-zeppelin,jlagarden/zeppelin,brigade/incubator-zeppelin,datalayer/zeppelin-R,prasadwagle/incubator-zeppelin,swakrish/incubator-zeppelin,volumeint/zeppelin,digitalreasoning/incubator-zeppelin,jongyoul/incubator-zeppelin,fogbeam/zeppelin_mirror,MikeTYChen/incubator-zeppelin,minahlee/zeppelin,nikste/incubator-zeppelin,cris83/incubator-zeppelin,VipinRathor/zeppelin,r-kamath/incubator-zeppelin,namanmishra91/zeppelin,hammertank/zeppelin,datalayer/zeppelin-R,hammertank/zeppelin,MikeTYChen/incubator-zeppelin,minahlee/incubator-zeppelin,mwpenny/zeppelin-esri,MikeTYChen/incubator-zeppelin,mwpenny/zeppelin-esri,suvam97/zeppelin,mfelgamal/zeppelin,wary/zeppelin,VipinRathor/zeppelin,granturing/incubator-zeppelin,joroKr21/incubator-zeppelin,karuppayya/zeppelin,vrlo/zeppelin,lresende/incubator-zeppelin,optimizely/incubator-zeppelin,astroshim/incubator-zeppelin,benoyantony/zeppelin,pellmont/zeppelin,AlexanderShoshin/zeppelin,yorek/zeppelin,pravin-dsilva/zeppelin,Leemoonsoo/zeppelin,sergeymazin/zeppelin,astroshim/zeppelin,digitalreasoning/incubator-zeppelin,prabhjyotsingh/zeppelin,soralee/zeppelin,Leemoonsoo/zeppelin,tzolov/incubator-zeppelin,prasadwagle/incubator-zeppelin,Solution-Global/zeppelin,apache/zeppelin,Madhuka/incubator-zeppelin,tinkoff-dwh/zeppelin,Leemoonsoo/incubator-zeppelin,datalayer/zeppelin-R,brigade/incubator-zeppelin,zetaris/zeppelin,Leemoonsoo/incubator-zeppelin,HeartSaVioR/incubator-zeppelin,sravan-s/zeppelin,datalayer/zeppelin-datalayer,soralee/zeppelin,granturing/incubator-zeppelin,sagarkulkarni3592/incubator-zeppelin,joroKr21/incubator-zeppelin,pellmont/zeppelin,cjmatta/incubator-zeppelin,openthings/zeppelin,jongyoul/zeppelin,rlugojr/incubator-zeppelin,Madhuka/incubator-zeppelin,rerngvit/incubator-zeppelin,Solution-Global/zeppelin,sagarkulkarni3592/incubator-zeppelin,VipinRathor/zeppelin,ankurmitujjain/incubator-zeppelin,vrajat/incubator-zeppelin,suvam97/zeppelin,mwpenny/zeppelin-esri,raysteam/zeppelin,minahlee/incubator-zeppelin,minahlee/zeppelin,tillrohrmann/incubator-zeppelin,joroKr21/incubator-zeppelin,spacewalkman/incubator-zeppelin,benoyantony/zeppelin,digitalreasoning/incubator-zeppelin,astroshim/zeppelin,yu74n/zeppelin,datalayer/zeppelin,radicalbit/incubator-zeppelin,SarunasG/zeppelin-oidc,herval/zeppelin,tillrohrmann/incubator-zeppelin,doanduyhai/incubator-zeppelin,suvam97/zeppelin,minahlee/zeppelin,nikste/incubator-zeppelin,lobamba/zeppelin,granturing/incubator-zeppelin,ankurmitujjain/incubator-zeppelin,vipul1409/zeppelin,Nova-Boy/zeppelin,onkarshedge/incubator-zeppelin,1ambda/zeppelin,sctincman/zeppelin,hammertank/zeppelin,sravan-s/zeppelin,herval/zeppelin,spacewalkman/incubator-zeppelin,volumeint/zeppelin,apache/zeppelin,zjffdu/zeppelin,yorek/zeppelin,joroKr21/incubator-zeppelin,tillrohrmann/incubator-zeppelin,vgmartinez/incubator-zeppelin,Altiscale/incubator-zeppelin,swakrish/incubator-zeppelin,AlexanderShoshin/zeppelin,rerngvit/incubator-zeppelin,rconline/zeppelin,igorborojevic/incubator-zeppelin,Leemoonsoo/incubator-zeppelin,sergeymazin/zeppelin,mfelgamal/zeppelin,Solution-Global/zeppelin,sctincman/zeppelin,RamVenkatesh/incubator-zeppelin,datalayer/zeppelin,pellmont/zeppelin,soralee/zeppelin,Altiscale/incubator-zeppelin,prabhjyotsingh/incubator-zeppelin,datalayer/zeppelin-datalayer,YuanGunGun/zeppelin,jongyoul/zeppelin,vrajat/incubator-zeppelin,radicalbit/incubator-zeppelin,openthings/zeppelin,raysteam/zeppelin,namanmishra91/zeppelin,Altiscale/incubator-zeppelin,mwpenny/zeppelin-esri,jongyoul/zeppelin,soralee/zeppelin,minahlee/zeppelin,sergeymazin/zeppelin,astroshim/incubator-zeppelin,r-kamath/zeppelin,zjffdu/zeppelin,raysteam/zeppelin,Nova-Boy/zeppelin,sctincman/zeppelin,zjffdu/zeppelin,cjmatta/incubator-zeppelin,jongyoul/incubator-zeppelin,tzolov/incubator-zeppelin,doanduyhai/incubator-zeppelin,hkropp/incubator-zeppelin,samuel-pt/incubator-zeppelin,namanmishra91/zeppelin,AlexanderShoshin/zeppelin,datalayer/zeppelin-datalayer,r-kamath/zeppelin,pravin-dsilva/zeppelin,anthonycorbacho/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,raysteam/zeppelin,samuel-pt/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,Leemoonsoo/zeppelin,vrlo/zeppelin,HeartSaVioR/incubator-zeppelin,digitalreasoning/incubator-zeppelin,jongyoul/incubator-zeppelin,suvam97/zeppelin,apache/incubator-zeppelin,fogbeam/zeppelin_mirror,digitalreasoning/incubator-zeppelin,namanmishra91/zeppelin,sohaibiftikhar/zeppelin,sagarkulkarni3592/incubator-zeppelin,cjmatta/incubator-zeppelin,wary/zeppelin,anthonycorbacho/incubator-zeppelin,1ambda/zeppelin,r-kamath/zeppelin,AlexanderShoshin/zeppelin,ravicodder/incubator-zeppelin,cjmatta/incubator-zeppelin,optimizely/incubator-zeppelin,AlexanderShoshin/zeppelin,rconline/zeppelin,MikeTYChen/incubator-zeppelin