Move zsh completion logic to new subcommand: commit
Move zsh completion logic to new subcommand: commit

Signed-off-by: Steve Durrheimer <a2c1a055e5b399822be341b4e663de3cd05cf8f7@gmail.com>

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