Default parallelism to 1.
Default parallelism to 1.

Signed-off-by: Daniel Nephin <6347c07ae509164cffebfb1e2a0d6ed64958db19@docker.com>

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