cluster: Proceed with startup if cluster component can't be created
cluster: Proceed with startup if cluster component can't be created

The current behavior is for dockerd to fail to start if the swarm
component can't be started for some reason. This can be difficult to
debug remotely because the daemon won't be running at all, so it's not
possible to hit endpoints like /info to see what's going on. It's also
very difficult to recover from the situation, since commands like
"docker swarm leave" are unavailable.

Change the behavior to allow startup to proceed.

Signed-off-by: Aaron Lehmann <8ecfc6017a87905413dcd7d63696a2a4c351b604@docker.com>

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