Add more detailed info to hostname validation error
Add more detailed info to hostname validation error

Signed-off-by: Nathan LeClaire <38947c4d2b13dfd9789405506441b98609e8975e@gmail.com>

xinxian0458/machine,thaJeztah/docker.github.io,denverdino/denverdino.github.io,jeanlaurent/machine,denverdino/machine,titanlien/machine,carloreggiani/machine,allingeek/machine,skatsuta/machine,phiroict/docker,miqui/machine,skippbox/kmachine,hironobu-s/machine,TrumanLing/machine,marsmensch/machine,docker/docker.github.io,londoncalling/machine,cvstebut/machine,deitch/machine,thaJeztah/machine,abstractitptyltd/machine,alexisbellido/docker.github.io,menglingwei/machine,robinbb/machine,skippbox/kmachine,Herbis/machine,binario200/machine,bwahn/machine,troy0820/docker.github.io,cab105/machine,pragkent/machine,OpenNebula/machine,akolpakov/machine,beni55/machine,dgageot/machine,ggiamarchi/machine,aduermael/docker.github.io,pdxjohnny/machine,denverdino/docker.github.io,evq/machine,troy0820/docker.github.io,brandoncc/machine,paultag/machine,wenlock/machine,amylindburg/machine,StackPointCloud/machine,MHBauer/machine,zehicle/machine,phiroict/docker,juliengarcia/machine,zchee/machine,denverdino/denverdino.github.io,rupakg/machine,rillig/docker.github.io,imikushin/machine,ehazlett/machine,denmat/machine,slowteetoe/machine,dgageot/machine,shubheksha/docker.github.io,thaJeztah/docker.github.io,londoncalling/docker.github.io,jkingyens/machine,joeuo/docker.github.io,thaJeztah/machine,csakoda/machine,dudymas/machine,carloreggiani/machine,sebadiaz/machine,cab105/machine,ocean/machine,chantra/machine,jeanlaurent/machine,yanzay/machine,joyent/machine,voutilad/machine,mark-adams/machine,otherjason/machine,joeuo/docker.github.io,jlusiardi/machine,johnstep/docker.github.io,steeve/machine,atsaki/machine,tyrken/machine,clintonskitson/machine,laveolu/machine,thaJeztah/docker.github.io,rillig/docker.github.io,troy0820/docker.github.io,brandoncc/machine,j3tm0t0/machine,duglin/machine,databus23/machine,soleo/machine,jmelis/machine,wzymaster/machine,jkingyens/machine,larsla/machine,cvstebut/machine,tyrken/machine,vovimayhem/machine,Kast0rTr0y/docker-machine,evq/machine,rdgreis/machine,jsirois/machine,yanzay/machine,pragkent/machine,yut148/machine,danix800/docker.github.io,bfirsh/machine,voutilad/machine,emsi/machine,johnstep/docker.github.io,euank/machine,alexisbellido/docker.github.io,sjfloat/machine,mark-adams/machine,rowancarr/machine,joaofnfernandes/docker.github.io,askb/machine,sjfloat/machine,BSWANG/denverdino.github.io,LuisBosquez/docker.github.io,StackPointCloud/machine,bdwill/docker.github.io,ppadala/machine,joaofnfernandes/docker.github.io,docker-zh/docker.github.io,shin-/docker.github.io,paultag/machine,cjellick/machine,londoncalling/docker.github.io,shubheksha/docker.github.io,shin-/docker.github.io,robertbreker/machine,ppadala/machine,denverdino/docker.github.io,shin-/docker.github.io,trecloux/machine,anweiss/docker.github.io,jgsqware/machine,aduermael/docker.github.io,alexisbellido/docker.github.io,dmp42/machine,cpuguy83/machine,deitch/machine,jhoos/machine,djfarrelly/machine,JohnKDay/machine,denverdino/machine,bdwill/docker.github.io,ggiamarchi/machine,surgeforward/machine,denverdino/denverdino.github.io,pottava/machine,jarosser06/machine,CenturyLinkLabs/machine,imikushin/machine,Grynn/machine,Grynn/machine,tpires/machine,bgokden/machine,atsaki/machine,aperepel/machine,justintung/machine,ksasi/machine,crunchywelch/machine,dudymas/machine,wenlock/machine,faijaz/docker-machine,flavio/machine,menglingwei/denverdino.github.io,ubiquityhosting/machine,seegno-forks/machine,hironobu-s/machine,aduermael/docker.github.io,jzwlqx/denverdino.github.io,frapposelli/machine,MHBauer/machine,bwahn/machine,trecloux/machine,thaJeztah/machine,whilp/machine,JimGalasyn/docker.github.io,unodba/machine,LuisBosquez/docker.github.io,joelea/machine,moxiegirl/machine,slowteetoe/machine,miqui/machine,sanscontext/docker.github.io,legal90/machine,gerred/machine,otherjason/machine,usmanismail/machine,jeffellin/machine,atsaki/machine-2,gdevillele/docker.github.io,xinxian0458/machine,anshulr/machine,databus23/machine,ddaze/machine,akolpakov/machine,joaofnfernandes/docker.github.io,rawkode/machine,ibuildthecloud/machine,bgokden/machine,ekristen/machine,jgsqware/machine,bdwill/docker.github.io,wzymaster/machine,menglingwei/denverdino.github.io,carolynvs/machine,rowancarr/machine,shubheksha/docker.github.io,zehicle/machine,mjtrefethen/machine,aperepel/machine,sebadiaz/machine,SvenDowideit/machine,NeilW/machine,xiaohui/machine,joelea/machine,shot/machine,shubheksha/docker.github.io,unodba/machine,kechol/machine,gdevillele/docker.github.io,ksasi/machine,yut148/machine,anweiss/docker.github.io,anweiss/docker.github.io,jpressnell/machine,jarosser06/machine,londoncalling/docker.github.io,cjellick/machine,amylindburg/machine,rwilliams/machine,frapposelli/machine,davidstosik/machine,ddaze/machine,danix800/docker.github.io,joeuo/docker.github.io,exoscale/docker-machine,robertbreker/machine,ksasi/machine,phiroict/docker,beni55/machine,jeffellin/machine,BSWANG/denverdino.github.io,juliengarcia/machine,databus23/machine,bfirsh/machine,wzymaster/machine,skatsuta/machine,docker-zh/docker.github.io,Parallels/docker-machine,docker/docker.github.io,phiroict/docker,xiaohui/machine,johnstep/docker.github.io,sanscontext/docker.github.io,JohnKDay/machine,phiroict/docker,gdevillele/docker.github.io,xiaohui/machine,SvenDowideit/machine,dnephin/machine,docker-zh/docker.github.io,BSWANG/denverdino.github.io,denverdino/denverdino.github.io,troy0820/docker.github.io,LaynePeng/machine,TrumanLing/machine,denverdino/machine-1,wlan0/machine,robinbb/machine,atsaki/machine,jlusiardi/machine,ubiquityhosting/machine,miqui/machine,bgokden/machine,surgeforward/machine,ehazlett/machine,13W/machine,robertbreker/machine,slashk/machine,sjfloat/machine,carolynvs/machine,wenlock/machine,sausheong/machine,robvanmieghem/machine,allingeek/machine,ibuildthecloud/machine,zchee/machine,NeilW/machine,ppadala/machine,rwilliams/machine,kacole2/machine,JimGalasyn/docker.github.io,nunofgs/docker-machine,anweiss/docker.github.io,kechol/machine,menglingwei/machine,bdwill/docker.github.io,pdxjohnny/machine,joeuo/docker.github.io,kunalkushwaha/machine,alindeman/machine,docker/machine,hironobu-s/machine,jhoos/machine,docker/docker.github.io,londoncalling/machine,csakoda/machine,jsirois/machine,shin-/docker.github.io,docker/docker.github.io,hypriot/machine,alexisbellido/docker.github.io,wlan0/machine,londoncalling/docker.github.io,gerred/machine,denverdino/machine-1,shot/machine,pdxjohnny/machine,davidstosik/machine,clintonskitson/machine,ravolt/docker-machine,tyrken/machine,JimGalasyn/docker.github.io,kunalkushwaha/machine,LuisBosquez/docker.github.io,erikdejonge/machine,LaynePeng/machine,justintung/machine,bdwill/docker.github.io,jgsqware/machine,allingeek/machine,StackPointCloud/machine,larsla/machine,gdevillele/docker.github.io,dnephin/machine,jpressnell/machine,binario200/machine,bookerzzz/machine,errordeveloper/machine,shin-/docker.github.io,vovimayhem/machine,dskora/machine,alindeman/machine,cab105/machine,JimGalasyn/docker.github.io,OpenNebula/machine,bwahn/machine,slashk/machine,euank/machine,schatt/machine,jzwlqx/denverdino.github.io,robvanmieghem/machine,atsaki/machine-2,rdgreis/machine,jzwlqx/denverdino.github.io,blueyed/machine,CenturyLinkLabs/machine,dskora/machine,titanlien/machine,JohnKDay/machine,BSWANG/denverdino.github.io,crunchywelch/machine,denverdino/machine,NeilW/machine,juliengarcia/machine,cpuguy83/machine,shubheksha/docker.github.io,BSWANG/denverdino.github.io,skatsuta/machine,Qwinix/docker-machine-vmware,rupakg/machine,jzwlqx/denverdino.github.io,nunofgs/docker-machine,gdevillele/docker.github.io,Parallels/docker-machine,thaJeztah/docker.github.io,joaofnfernandes/docker.github.io,pottava/machine,feelobot/machine,chantra/machine,abstractitptyltd/machine,londoncalling/docker.github.io,schatt/machine,usmanismail/machine,soleo/machine,gerred/machine,denverdino/docker.github.io,kacole2/machine,joaofnfernandes/docker.github.io,titanlien/machine,denmat/machine,tpires/machine,ocean/machine,vovimayhem/machine,legal90/machine,docker-zh/docker.github.io,bookerzzz/machine,ekristen/machine,jhoos/machine,rawkode/machine,sanscontext/docker.github.io,sausheong/machine,s7v7nislands/machine,marsmensch/machine,feelobot/machine,otherjason/machine,blueyed/machine,shot/machine,13W/machine,jmelis/machine,asalhamed/machine,JimGalasyn/docker.github.io,OpenNebula/machine,asalhamed/machine,Qwinix/docker-machine-vmware,jsirois/machine,jmelis/machine,laveolu/machine,hypriot/machine,robvanmieghem/machine,denverdino/denverdino.github.io,askb/machine,errordeveloper/machine,askb/machine,s7v7nislands/machine,rillig/docker.github.io,j3tm0t0/machine,kunalkushwaha/machine,LuisBosquez/docker.github.io,cgvarela/machine,menglingwei/denverdino.github.io,thaJeztah/docker.github.io,emsi/machine,Herbis/machine,carolynvs/machine,sanscontext/docker.github.io,ubiquityhosting/machine,docker/machine,cgvarela/machine,trecloux/machine,menglingwei/denverdino.github.io,dudymas/machine,pragkent/machine,danix800/docker.github.io,usmanismail/machine,johnstep/docker.github.io,exoscale/docker-machine,soleo/machine,joeuo/docker.github.io,dweomer/docker-machine,denverdino/docker.github.io,duglin/machine,dweomer/docker-machine,yanzay/machine,docker-zh/docker.github.io,bookerzzz/machine,kacole2/machine,anshulr/machine,Grynn/machine,denverdino/docker.github.io,faijaz/docker-machine,mjtrefethen/machine,jlusiardi/machine,flavio/machine,mjhea0/machine,beni55/machine,wlan0/machine,alexisbellido/docker.github.io,jasisk/machine,menglingwei/denverdino.github.io,jkingyens/machine,xinxian0458/machine,aduermael/docker.github.io,rillig/docker.github.io,pottava/machine,cvstebut/machine,mjhea0/machine,steeve/machine,danix800/docker.github.io,ravolt/docker-machine,anweiss/docker.github.io,rowancarr/machine,davidstosik/machine,jeanlaurent/machine,LuisBosquez/docker.github.io,moxiegirl/machine,jzwlqx/denverdino.github.io,seegno-forks/machine,whilp/machine,errordeveloper/machine,docker/docker.github.io,johnstep/docker.github.io,joyent/machine,djfarrelly/machine,rwilliams/machine,jeffellin/machine,faijaz/docker-machine,jasisk/machine,sanscontext/docker.github.io,moxiegirl/machine,sebadiaz/machine,dmp42/machine,Kast0rTr0y/docker-machine,erikdejonge/machine,tpires/machine,menglingwei/machine,zchee/machine