ZEPPELIN-1410  SLF4J: Class path contains multiple SLF4J bindings
ZEPPELIN-1410  SLF4J: Class path contains multiple SLF4J bindings

SLF4J is having 2 depedencies in classpath. one is slf4j-log4j12 and another is logback. The Logback is added in class path by apache lens projec used in lens module. I have added exclusion to remove that in this PR

###  PR type
Bug Fix

###  JIRA
* [ZEPPELIN-1410](https://issues.apache.org/jira/browse/ZEPPELIN-1410)  SLF4J: Class path contains multiple SLF4J bindings

### Fix
This removes logback in the package of zeppelin. But still logback is shown in install logs. This is caused by cobertura plugin. Please look into [ZEPPELIN-1410](https://issues.apache.org/jira/browse/ZEPPELIN-1410) for more details

Author: Naveen Subramanian <nsubramanian-consultant@quixey.com>

Closes #1482 from snaveenp/1410-slf4j-bindings and squashes the following commits:

a7af642 [Naveen Subramanian] added exclusion for logback dependency to resolve conflict with slf4j-log4j12

jongyoul/zeppelin,apache/incubator-zeppelin,sctincman/zeppelin,jongyoul/zeppelin,Leemoonsoo/zeppelin,soralee/zeppelin,vipul1409/zeppelin,radicalbit/incubator-zeppelin,chilang/zeppelin,volumeint/zeppelin,Leemoonsoo/incubator-zeppelin,pravin-dsilva/zeppelin,Leemoonsoo/incubator-zeppelin,benoyantony/zeppelin,astroshim/zeppelin,joroKr21/incubator-zeppelin,prabhjyotsingh/zeppelin,yorek/zeppelin,mwkang/zeppelin,vipul1409/zeppelin,datalayer/zeppelin,tinkoff-dwh/zeppelin,datalayer/zeppelin-datalayer,anthonycorbacho/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,herval/zeppelin,volumeint/zeppelin,SarunasG/zeppelin-oidc,zetaris/zeppelin,sctincman/zeppelin,namanmishra91/zeppelin,r-kamath/incubator-zeppelin,YuanGunGun/zeppelin,karuppayya/zeppelin,volumeint/zeppelin,pellmont/zeppelin,fogbeam/zeppelin_mirror,sctincman/zeppelin,herval/zeppelin,Leemoonsoo/zeppelin,tzolov/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,pravin-dsilva/zeppelin,yu74n/zeppelin,datalayer/zeppelin-datalayer,mwkang/zeppelin,r-kamath/zeppelin,sctincman/zeppelin,prabhjyotsingh/zeppelin,jongyoul/incubator-zeppelin,prabhjyotsingh/incubator-zeppelin,r-kamath/incubator-zeppelin,hkropp/incubator-zeppelin,rconline/zeppelin,soralee/zeppelin,r-kamath/zeppelin,pravin-dsilva/zeppelin,SarunasG/zeppelin-oidc,soralee/zeppelin,Leemoonsoo/zeppelin,tzolov/incubator-zeppelin,openthings/zeppelin,Nova-Boy/zeppelin,Nova-Boy/zeppelin,VipinRathor/zeppelin,IceKhan13/zeppelin,pravin-dsilva/zeppelin,yorek/zeppelin,lresende/incubator-zeppelin,raysteam/zeppelin,VipinRathor/zeppelin,zjffdu/zeppelin,vipul1409/zeppelin,sravan-s/zeppelin,apache/incubator-zeppelin,YuanGunGun/zeppelin,astroshim/zeppelin,vgmartinez/incubator-zeppelin,hkropp/incubator-zeppelin,herval/zeppelin,astroshim/zeppelin,tzolov/incubator-zeppelin,wary/zeppelin,1ambda/zeppelin,prabhjyotsingh/incubator-zeppelin,astroshim/incubator-zeppelin,r-kamath/incubator-zeppelin,AlexanderShoshin/zeppelin,cfries/zeppelin,jongyoul/incubator-zeppelin,openthings/zeppelin,vrlo/zeppelin,minahlee/incubator-zeppelin,Leemoonsoo/zeppelin,minahlee/zeppelin,r-kamath/incubator-zeppelin,minahlee/zeppelin,sctincman/zeppelin,AlexanderShoshin/zeppelin,sergeymazin/zeppelin,datalayer/zeppelin,cquptEthan/incubator-zeppelin,pellmont/zeppelin,chilang/zeppelin,VipinRathor/zeppelin,mwkang/zeppelin,vgmartinez/incubator-zeppelin,SachinJanani/zeppelin,pravin-dsilva/zeppelin,benoyantony/zeppelin,yorek/zeppelin,astroshim/incubator-zeppelin,yu74n/zeppelin,radicalbit/incubator-zeppelin,hkropp/incubator-zeppelin,apache/zeppelin,benoyantony/zeppelin,anthonycorbacho/incubator-zeppelin,radicalbit/incubator-zeppelin,zjffdu/zeppelin,sergeymazin/zeppelin,sergeymazin/zeppelin,jongyoul/incubator-zeppelin,sohaibiftikhar/zeppelin,cfries/zeppelin,zetaris/zeppelin,zetaris/zeppelin,joroKr21/incubator-zeppelin,apache/zeppelin,fogbeam/zeppelin_mirror,apache/zeppelin,openthings/zeppelin,astroshim/incubator-zeppelin,vgmartinez/incubator-zeppelin,hkropp/incubator-zeppelin,jongyoul/incubator-zeppelin,chilang/zeppelin,vipul1409/zeppelin,datalayer/zeppelin,namanmishra91/zeppelin,datalayer/zeppelin-datalayer,sravan-s/zeppelin,doanduyhai/incubator-zeppelin,VipinRathor/zeppelin,minahlee/zeppelin,radicalbit/incubator-zeppelin,AlexanderShoshin/zeppelin,jongyoul/zeppelin,yorek/zeppelin,hammertank/zeppelin,yu74n/zeppelin,astroshim/incubator-zeppelin,tinkoff-dwh/zeppelin,namanmishra91/zeppelin,SachinJanani/zeppelin,openthings/zeppelin,r-kamath/incubator-zeppelin,Leemoonsoo/incubator-zeppelin,lresende/incubator-zeppelin,prabhjyotsingh/zeppelin,minahlee/incubator-zeppelin,tzolov/incubator-zeppelin,yorek/zeppelin,sravan-s/zeppelin,jongyoul/zeppelin,minahlee/zeppelin,Leemoonsoo/zeppelin,sohaibiftikhar/zeppelin,AlexanderShoshin/zeppelin,pellmont/zeppelin,lresende/incubator-zeppelin,vrlo/zeppelin,doanduyhai/incubator-zeppelin,sergeymazin/zeppelin,wary/zeppelin,raysteam/zeppelin,pellmont/zeppelin,chilang/zeppelin,1ambda/zeppelin,volumeint/zeppelin,AlexanderShoshin/zeppelin,sravan-s/zeppelin,Altiscale/incubator-zeppelin,hammertank/zeppelin,mwkang/zeppelin,Leemoonsoo/incubator-zeppelin,SarunasG/zeppelin-oidc,pravin-dsilva/zeppelin,openthings/zeppelin,namanmishra91/zeppelin,astroshim/zeppelin,tzolov/incubator-zeppelin,r-kamath/incubator-zeppelin,sravan-s/zeppelin,karuppayya/zeppelin,SarunasG/zeppelin-oidc,jongyoul/zeppelin,sohaibiftikhar/zeppelin,rconline/zeppelin,herval/zeppelin,cfries/zeppelin,YuanGunGun/zeppelin,soralee/zeppelin,YuanGunGun/zeppelin,karuppayya/zeppelin,cfries/zeppelin,vgmartinez/incubator-zeppelin,zjffdu/zeppelin,SachinJanani/zeppelin,yu74n/zeppelin,IceKhan13/zeppelin,AlexanderShoshin/zeppelin,r-kamath/zeppelin,soralee/zeppelin,doanduyhai/incubator-zeppelin,benoyantony/zeppelin,mwkang/zeppelin,cquptEthan/incubator-zeppelin,r-kamath/zeppelin,1ambda/zeppelin,doanduyhai/incubator-zeppelin,lresende/incubator-zeppelin,rconline/zeppelin,datalayer/zeppelin,Nova-Boy/zeppelin,raysteam/zeppelin,joroKr21/incubator-zeppelin,tinkoff-dwh/zeppelin,astroshim/zeppelin,tinkoff-dwh/zeppelin,lresende/incubator-zeppelin,wary/zeppelin,sohaibiftikhar/zeppelin,r-kamath/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,chilang/zeppelin,herval/zeppelin,raysteam/zeppelin,VipinRathor/zeppelin,lresende/incubator-zeppelin,prabhjyotsingh/incubator-zeppelin,IceKhan13/zeppelin,volumeint/zeppelin,tinkoff-dwh/zeppelin,benoyantony/zeppelin,raysteam/zeppelin,1ambda/zeppelin,1ambda/zeppelin,pellmont/zeppelin,benoyantony/zeppelin,sravan-s/zeppelin,pellmont/zeppelin,namanmishra91/zeppelin,SachinJanani/zeppelin,soralee/zeppelin,Nova-Boy/zeppelin,vgmartinez/incubator-zeppelin,prabhjyotsingh/zeppelin,chilang/zeppelin,minahlee/zeppelin,fogbeam/zeppelin_mirror,zetaris/zeppelin,fogbeam/zeppelin_mirror,jongyoul/zeppelin,sohaibiftikhar/zeppelin,vrlo/zeppelin,Altiscale/incubator-zeppelin,vgmartinez/incubator-zeppelin,apache/incubator-zeppelin,Altiscale/incubator-zeppelin,datalayer/zeppelin,prabhjyotsingh/incubator-zeppelin,minahlee/zeppelin,rconline/zeppelin,apache/incubator-zeppelin,rconline/zeppelin,vipul1409/zeppelin,apache/incubator-zeppelin,astroshim/zeppelin,sctincman/zeppelin,karuppayya/zeppelin,prabhjyotsingh/zeppelin,hkropp/incubator-zeppelin,tinkoff-dwh/zeppelin,minahlee/incubator-zeppelin,volumeint/zeppelin,joroKr21/incubator-zeppelin,sergeymazin/zeppelin,cfries/zeppelin,zjffdu/zeppelin,SachinJanani/zeppelin,SachinJanani/zeppelin,zjffdu/zeppelin,raysteam/zeppelin,rconline/zeppelin,1ambda/zeppelin,chilang/zeppelin,prabhjyotsingh/zeppelin,cquptEthan/incubator-zeppelin,fogbeam/zeppelin_mirror,apache/zeppelin,cquptEthan/incubator-zeppelin,astroshim/zeppelin,cquptEthan/incubator-zeppelin,astroshim/incubator-zeppelin,jongyoul/incubator-zeppelin,radicalbit/incubator-zeppelin,tzolov/incubator-zeppelin,apache/zeppelin,zetaris/zeppelin,SachinJanani/zeppelin,zjffdu/zeppelin,apache/incubator-zeppelin,IceKhan13/zeppelin,joroKr21/incubator-zeppelin,vrlo/zeppelin,IceKhan13/zeppelin,SarunasG/zeppelin-oidc,wary/zeppelin,hammertank/zeppelin,vrlo/zeppelin,doanduyhai/incubator-zeppelin,Altiscale/incubator-zeppelin,minahlee/incubator-zeppelin,sravan-s/zeppelin,vipul1409/zeppelin,cquptEthan/incubator-zeppelin,radicalbit/incubator-zeppelin,vipul1409/zeppelin,hammertank/zeppelin,pravin-dsilva/zeppelin,astroshim/incubator-zeppelin,soralee/zeppelin,lresende/incubator-zeppelin,volumeint/zeppelin,joroKr21/incubator-zeppelin,yu74n/zeppelin,sohaibiftikhar/zeppelin,minahlee/incubator-zeppelin,apache/zeppelin,minahlee/zeppelin,cquptEthan/incubator-zeppelin,Nova-Boy/zeppelin,namanmishra91/zeppelin,wary/zeppelin,raysteam/zeppelin,Nova-Boy/zeppelin,datalayer/zeppelin,sergeymazin/zeppelin,herval/zeppelin,datalayer/zeppelin,r-kamath/zeppelin,pellmont/zeppelin,Leemoonsoo/zeppelin,mwkang/zeppelin,wary/zeppelin,Leemoonsoo/zeppelin,namanmishra91/zeppelin,cfries/zeppelin,jongyoul/zeppelin,doanduyhai/incubator-zeppelin,SarunasG/zeppelin-oidc,IceKhan13/zeppelin,hammertank/zeppelin,datalayer/zeppelin-datalayer,openthings/zeppelin,IceKhan13/zeppelin,SarunasG/zeppelin-oidc,prabhjyotsingh/zeppelin,AlexanderShoshin/zeppelin,anthonycorbacho/incubator-zeppelin,r-kamath/zeppelin,vrlo/zeppelin,jongyoul/incubator-zeppelin,doanduyhai/incubator-zeppelin,prabhjyotsingh/incubator-zeppelin,sergeymazin/zeppelin,cfries/zeppelin,Nova-Boy/zeppelin,1ambda/zeppelin,hammertank/zeppelin,fogbeam/zeppelin_mirror,VipinRathor/zeppelin,zetaris/zeppelin,joroKr21/incubator-zeppelin,rconline/zeppelin,zetaris/zeppelin,sctincman/zeppelin,prabhjyotsingh/incubator-zeppelin,benoyantony/zeppelin,VipinRathor/zeppelin,yu74n/zeppelin,r-kamath/zeppelin,apache/zeppelin,Altiscale/incubator-zeppelin,yorek/zeppelin,sohaibiftikhar/zeppelin,karuppayya/zeppelin,fogbeam/zeppelin_mirror,YuanGunGun/zeppelin,radicalbit/incubator-zeppelin,karuppayya/zeppelin,yu74n/zeppelin,vrlo/zeppelin,tinkoff-dwh/zeppelin,yorek/zeppelin,wary/zeppelin,YuanGunGun/zeppelin,karuppayya/zeppelin,Leemoonsoo/zeppelin,Leemoonsoo/incubator-zeppelin,Leemoonsoo/incubator-zeppelin,Altiscale/incubator-zeppelin,anthonycorbacho/incubator-zeppelin,YuanGunGun/zeppelin,hammertank/zeppelin,herval/zeppelin,openthings/zeppelin,zjffdu/zeppelin,hkropp/incubator-zeppelin,mwkang/zeppelin,joroKr21/incubator-zeppelin