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

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

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