Add bash completion for `docker build --add-host`
Add bash completion for `docker build --add-host`

Signed-off-by: Harald Albers <64b2b6d12bfe4baae7dad3d018f8cbf6b0e7a044@albersweb.de>

dims/docker,jwhonce/docker,pradipd/moby,duglin/docker,justincormack/docker,SvenDowideit/docker,djs55/docker,jameszhan/docker,dccurtis/docker,maxamillion/docker,sarnautov/moby,sdurrheimer/docker,sarnautov/moby,tophj-ibm/docker,JMesser81/docker,sdurrheimer/docker,yosifkit/docker,bearstech/moby,thaJeztah/docker,cpuguy83/docker,darrenstahlmsft/moby,yongtang/docker,dmcgowan/docker,POLJM242/docker,darrenstahlmsft/moby,shhsu/docker,sterchelen/docker,paralin/docker,Mokolea/docker,alfred-landrum/docker,x1022as/docker,tophj-ibm/moby,miminar/docker,ColinHebert/docker,trebonian/docker,PatrickLang/moby,unclejack/docker,thtanaka/docker,resin-io/docker,dmcgowan/docker,Mokolea/docker,noironetworks/docker,moul/docker,nawawi/docker,KingEmet/docker,ibuildthecloud/docker,dims/docker,shhsu/docker,yummypeng/docker,Ramzec/docker,prertik/docker,crosbymichael/docker,mixja/docker,madhanrm/docker,mtesselH/docker,darrenstahlmsft/docker,thaJeztah/docker,ndeloof/docker,lixiaobing10051267/docker,cpuguy83/docker,tklauser/docker,ibuildthecloud/docker,mstanleyjones/docker,crosbymichael/docker,mike1729/docker,q384566678/docker,moul/docker,johnstep/moby-moby,mixja/docker,YuPengZTE/docker,gnailuy/docker,imkin/moby,moby/moby,KarthikNayak/docker,whuwxl/docker,moypray/docker,johnstep/moby-moby,justincormack/docker,flavio/docker,jlhawn/docker,noironetworks/docker,kencochrane/docker,duglin/docker,rancher/docker,ibuildthecloud/docker,akira-baruah/docker,bonczj/moby-json-file-logger,alfred-landrum/docker,laijs/moby,thaJeztah/docker,jwhonce/docker,catinthesky/docker,coreos/docker,estesp/docker,unclejack/docker,liaoqingwei/docker,ndeloof/docker,tophj-ibm/docker,naveed-jamil-tenpearls/moby,vdemeester/docker,scotttlin/docker,trebonian/docker,SvenDowideit/docker,mixja/docker,rremer/moby,pradipd/moby,cyphar/docker,erikstmartin/docker,dgageot/docker,danyalKhaliq10p/moby,mikebrow/docker,liaoqingwei/docker,pramodhkp/moby,dsheets/moby,jlhawn/docker,liaoqingwei/docker,srust/docker,YuPengZTE/docker,KarthikNayak/docker,dperny/docker,mstanleyjones/docker,resin-io/docker,jimjag/docker,scotttlin/docker,konstruktoid/docker-1,tmp6154/docker,kolyshkin/docker,shishir-a412ed/docker,duglin/docker,thtanaka/docker,konstruktoid/docker-upstream,estesp/docker,ripcurld0/moby,prertik/docker,lixiaobing1/docker,KingEmet/docker,whuwxl/docker,kolyshkin/moby,konstruktoid/docker-upstream,gjaskiewicz/moby,fcrisciani/docker,dccurtis/docker,cpuguy83/docker,qudongfang/docker,tmp6154/docker,lixiaobing1/docker,justincormack/docker,dmcgowan/docker,amatsus/docker,yosifkit/docker,ibuildthecloud/docker,laijs/moby,coreos/docker,thaJeztah/docker,coolljt0725/docker,tianon/docker,bonczj/moby-json-file-logger,yosifkit/docker,fcrisciani/docker,pramodhkp/moby,mike1729/docker,catinthesky/docker,tklauser/docker,konstruktoid/docker-1,PatrickLang/moby,jthelin/docker,darrenstahlmsft/moby,jameszhan/docker,mikebrow/docker,catinthesky/docker,x1022as/docker,moby/moby,q384566678/docker,dperny/docker,q384566678/docker,tophj-ibm/docker,Ramzec/docker,tmp6154/docker,SvenDowideit/docker,flavio/docker,whuwxl/docker,allencloud/docker,srust/docker,kolyshkin/docker,mkumatag/docker,dgageot/docker,qudongfang/docker,danyalKhaliq10p/moby,tonistiigi/docker,madhanrm/docker,PatrickLang/moby,moypray/docker,rhatdan/docker,moypray/docker,cyphar/docker,estesp/docker,kencochrane/docker,mstanleyjones/docker,mikebrow/docker,dsheets/moby,srust/docker,tonistiigi/docker,noironetworks/docker,michael-holzheu/docker,raja-sami-10p/moby,mkumatag/docker,pramodhkp/moby,madhanrm/docker,alfred-landrum/docker,laijs/docker,tianon/docker,nawawi/docker,mkumatag/docker,tonistiigi/docker,ffoysal/docker,tklauser/docker,dperny/docker,rremer/moby,flavio/docker,coolljt0725/docker,x1022as/docker,bearstech/moby,mahak/docker,bearstech/moby,hqhq/moby,mtesselH/docker,AkihiroSuda/docker,docker/docker,miminar/docker,miminar/docker,paralin/docker,cyphar/docker,konstruktoid/docker-upstream,ColinHebert/docker,mtesselH/docker,docker/docker,jlhawn/docker,trebonian/docker,HideoYamauchi/docker,lixiaobing10051267/docker,ndeloof/docker,mike1729/docker,jvanz/docker,qudongfang/docker,gschaetz/moby,erikstmartin/docker,mahak/docker,ripcurld0/moby,moby/moby,ibuildthecloud/docker,yosifkit/docker,moul/docker,kencochrane/docker,Syntaxide/docker,kolyshkin/moby,akira-baruah/docker,dims/docker,jimjag/docker,raja-sami-10p/moby,michael-holzheu/docker,fcrisciani/docker,erikstmartin/docker,nalind/docker,charleszheng44/moby,Ramzec/docker,hqhq/moby,rhatdan/docker,laijs/moby,KingEmet/docker,kolyshkin/moby,thtanaka/docker,ffoysal/docker,docker/docker,laijs/docker,erikh/docker,yasiramin10p/moby,paralin/docker,vdemeester/docker,gnailuy/docker,yummypeng/docker,haveatry/docker,jimjag/docker,gschaetz/moby,sarnautov/moby,rancher/docker,haveatry/docker,mahak/docker,amatsus/docker,bearstech/moby,Mokolea/docker,rhatdan/docker,diogomonica/docker,flavio/docker,paralin/docker,yongtang/docker,kojiromike/docker,resin-io/docker,Mokolea/docker,nalind/docker,gnailuy/docker,kojiromike/docker,michael-holzheu/docker,darrenstahlmsft/docker,coolljt0725/docker,yummypeng/docker,sterchelen/docker,moby/moby,shishir-a412ed/docker,YuPengZTE/docker,maxamillion/docker,dgageot/docker,AkihiroSuda/docker,prertik/docker,johnstep/moby-moby,nawawi/docker,sterchelen/docker,nawawi/docker,naveed-jamil-tenpearls/moby,maxamillion/docker,gschaetz/moby,Syntaxide/docker,haveatry/docker,jimjag/docker,crosbymichael/docker,amatsus/docker,unclejack/docker,mahak/docker,imkin/moby,gnailuy/docker,Ramzec/docker,jwhonce/docker,allencloud/docker,konstruktoid/docker-1,tophj-ibm/moby,AkihiroSuda/docker,raja-sami-10p/moby,HideoYamauchi/docker,HideoYamauchi/docker,coreos/docker,Syntaxide/docker,yasiramin10p/moby,allencloud/docker,naveed-jamil-tenpearls/moby,ffoysal/docker,JMesser81/docker,tophj-ibm/moby,shishir-a412ed/docker,ripcurld0/moby,AkihiroSuda/docker,shhsu/docker,danyalKhaliq10p/moby,darrenstahlmsft/docker,djs55/docker,erikh/docker,jameszhan/docker,gjaskiewicz/moby,pradipd/moby,moul/docker,lixiaobing1/docker,djs55/docker,kojiromike/docker,charleszheng44/moby,ColinHebert/docker,bonczj/moby-json-file-logger,nalind/docker,rancher/docker,jvanz/docker,JMesser81/docker,konstruktoid/docker-upstream,vdemeester/docker,diogomonica/docker,charleszheng44/moby,lixiaobing10051267/docker,jvanz/docker,sdurrheimer/docker,erikh/docker,dccurtis/docker,yasiramin10p/moby,imkin/moby,POLJM242/docker,diogomonica/docker,laijs/docker,yongtang/docker,KarthikNayak/docker,nalind/docker,rremer/moby,hqhq/moby,trebonian/docker,gjaskiewicz/moby,dsheets/moby,scotttlin/docker,jthelin/docker,cpuguy83/docker