image: tarexport: do not quote integers in format string
image: tarexport: do not quote integers in format string

Basically, prevents outputs like:
```
invalid manifest, layers length mismatch: expected '\x02', got '\x01'
```

Signed-off-by: Antonio Murdaca <f9809039ea4850e75dcb8d80b778844aa463358f@redhat.com>

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