packer: fix formatting directives in test
packer: fix formatting directives in test

Fixes the following vet reports:

packer/template_test.go:496: possible formatting directive in Fatal call
packer/template_test.go:528: possible formatting directive in Fatal call

trumant/packer,rk295/packer,monsterzz/packer,monkeylittleinc/packer,KFishner/packer,tomwilkie/packer,sansb/packer,ephemeralsnow/packer,evertrue/packer,threatstream/packer,eranchetz/packer,grange74/packer,p1-nico/packer,jean/packer,jmptrader/packer,quantang/packer,umang1912/packer,tsmolka/packer,arizvisa/packer,pieter-lazzaro/packer,bhcleek/packer,mayflower/packer,vtolstov/packer,kpettijohn/packer,arizvisa/packer,rickard-von-essen/packer,mefellows/packer,uber/packer,dave2/packer,icnocop/packer,mwhooker/packer,Sheile/packer,mitchellh/packer,sneal/packer,sobrinho/packer,timsutton/packer,jen20/packer,higebu/packer,dragon788/packer,cyberhouse/packer,quantang/packer,KohlsTechnology/packer,life360/packer,stagrlee/packer,monkeylittleinc/packer,yonglehou/packer,higebu/packer,Akasurde/packer,dave2/packer,ldejager/packer,yoctocloud/packer,rnaveiras/packer,jsternberg/packer,tomwilkie/packer,KohlsTechnology/packer,markpeek/packer,arizvisa/packer,icnocop/packer,Xiol/packer,rickard-von-essen/packer,esemplare/packer,rickard-von-essen/packer,tomwilkie/packer,p1-nico/packer,dantran/packer,rk295/packer,samdunne/packer,tas50/packer,vtolstov/packer,Silver90/packer,aneeshusa/packer,quantang/packer,mafrosis/packer,masbog/packer,masbog/packer,feateds/packer,quantang/packer,ephemeralsnow/packer,Akasurde/packer,mgk/packer,mafrosis/packer,timsutton/packer,jean/packer,marklap/packer,esemplare/packer,bradparks/packer__create_vm_for_aws_docker_vagrant_etc,LinusU/packer,leroux/packer,marklap/packer,lantrix/packer,smaato/packer,atlassian/packer,pieter-lazzaro/packer,jasonchaffee/packer,mvanholsteijn/packer,gildas/packer-hyperv,jonathankarsh/packer,jamesleech/packer,rrva/packer,youhong316/packer,smaato/packer,life360/packer,zakuro9715/packer,shaunduncan/packer,sgirones/packer,tb3088/packer,tsmolka/packer,mkuzmin/packer,jimmythedog/packer,KFishner/packer,beni55/packer,life360/packer,trumant/packer,c22/packer,dragon788/packer,youhong316/packer,sobrinho/packer,pvandervelde/packer,yonglehou/packer,jae2/packer,hashicorp/packer,jgkim/packer,Silver90/packer,routelastresort/packer,LinusU/packer,tas50/packer,boumenot/packer,tsmolka/packer,zakuro9715/packer,ephemeralsnow/packer,c22/packer,tracyde/packer,rodm/packer,zhuzhih2017/packer,mansunkuo/packer,tracyde/packer,israelshirk/packer,mwhooker/packer,jamesbishopp/packer,samdunne/packer,vtolstov/packer,mgk/packer,stagrlee/packer,c22/packer,tsmolka/packer,leroux/packer,oliviertremblay/packer,pvandervelde/packer,blairham/packer,jen20/packer,pecigonzalo/packer,esemplare/packer,dieu/packer,routelastresort/packer,Sheile/packer,LinusU/packer,avldya/packer,mafrosis/packer,israelshirk/packer,AlphaStaxLLC/packer,mayflower/packer,pieter-lazzaro/packer,tas50/packer,BayanGroup/packer,mefellows/packer,mayflower/packer,rickard-von-essen/packer,hazelesque/packer,ldejager/packer,styro/packer,oliviertremblay/packer,mayflower/packer,cyberhouse/packer,dayglojesus/packer,bradparks/packer__create_vm_for_aws_docker_vagrant_etc,hazelesque/packer,pvandervelde/packer,leroux/packer,ttaylor249/packer,jonathankarsh/packer,taliesins/packer,KohlsTechnology/packer,icnocop/packer,c22/packer,mohae/packer,kpettijohn/packer,zhuzhih2017/packer,mansunkuo/packer,jamesbishopp/packer,pvanbuijtene/packer,sansb/packer,jamesleech/packer,orivej/packer,sneal/packer,p1-nico/packer,grubernaut/packer,mkuzmin/packer,p1-nico/packer,styro/packer,monsterzz/packer,pvanbuijtene/packer,manicai/packer,paulmey/packer,manicai/packer,mgk/packer,routelastresort/packer,icnocop/packer,sobrinho/packer,Xiol/packer,bhcleek/packer,mkuzmin/packer,rk295/packer,manicai/packer,kgrvamsi/packer,zeliff/packer,yoctocloud/packer,icnocop/packer,KFishner/packer,life360/packer,grange74/packer,pearkes/packer,dayglojesus/packer,umang1912/packer,mitchellh/packer,yonglehou/packer,styro/packer,paulvollmer/packer,taliesins/packer,jsternberg/packer,esemplare/packer,timsutton/packer,tsmolka/packer,rrva/packer,ricardclau/packer,rodm/packer,manicai/packer,sansb/packer,danschaffer/packer,mohae/packer,fnoeding/packer,kgrvamsi/packer,markpeek/packer,markpeek/packer,ricardclau/packer,ricardclau/packer,BayanGroup/packer,jae2/packer,pvandervelde/packer,smaato/packer,DualSpark/packer,pieter-lazzaro/packer,kgrvamsi/packer,lantrix/packer,bhcleek/packer,ChrisLundquist/packer,threatstream/packer,justincampbell/packer,marklap/packer,sequenceiq/packer,smaato/packer,dieu/packer,aneeshusa/packer,ChrisLundquist/packer,life360/packer,sequenceiq/packer,burnzy/packer,mwhooker/packer,AlphaStaxLLC/packer,mefellows/packer,jae2/packer,orivej/packer,orivej/packer,napramirez/packer,rnaveiras/packer,grubernaut/packer,timsutton/packer,zhuzhih2017/packer,mwhooker/packer,jimmythedog/packer,KohlsTechnology/packer,mkuzmin/packer,legal90/packer,p1-nico/packer,napramirez/packer,jasonchaffee/packer,btd/packer,jimmythedog/packer,gildas/packer-hyperv,jmptrader/packer,dev-head/packer,shaunduncan/packer,gbarberi/packer,mitchellh/packer,zakuro9715/packer,fnoeding/packer,boumenot/packer,cyberhouse/packer,sean-/packer,pvandervelde/packer,mansunkuo/packer,monsterzz/packer,styro/packer,atlassian/packer,evertrue/packer,dave2/packer,shaunduncan/packer,blairham/packer,youhong316/packer,sequenceiq/packer,feateds/packer,sean-/packer,mohae/packer,mvanholsteijn/packer,jean/packer,btd/packer,mitchellh/packer,shaunduncan/packer,monkeylittleinc/packer,atlassian/packer,umang1912/packer,marklap/packer,dayglojesus/packer,eranchetz/packer,arizvisa/packer,zhuzhih2017/packer,grubernaut/packer,eranchetz/packer,atlassian/packer,hazelesque/packer,stagrlee/packer,Xiol/packer,zakuro9715/packer,jean/packer,danschaffer/packer,tb3088/packer,ChrisLundquist/packer,jgkim/packer,dieu/packer,marc-ta/packer,masbog/packer,Cbeck527/packer,jamesbishopp/packer,masbog/packer,bhcleek/packer,jszwedko/packer,dantran/packer,monkeylittleinc/packer,paulvollmer/packer,monsterzz/packer,Sheile/packer,israelshirk/packer,jae2/packer,bryson/packer,fnoeding/packer,henrysher/packer,routelastresort/packer,boumenot/packer,beni55/packer,legal90/packer,threatstream/packer,feateds/packer,dieu/packer,rodm/packer,taliesins/packer,hazelesque/packer,atlassian/packer,pecigonzalo/packer,burnzy/packer,umang1912/packer,jsternberg/packer,markpeek/packer,KohlsTechnology/packer,yoctocloud/packer,ttaylor249/packer,avldya/packer,pecigonzalo/packer,rk295/packer,tracyde/packer,dave2/packer,uber/packer,Cbeck527/packer,sean-/packer,taliesins/packer,tb3088/packer,danschaffer/packer,tsmolka/packer,zeliff/packer,paulmey/packer,mvanholsteijn/packer,rickard-von-essen/packer,Akasurde/packer,sgirones/packer,smaato/packer,smaato/packer,napramirez/packer,mafrosis/packer,youhong316/packer,burnzy/packer,jarl-dk/packer,bensojona/packer,dragon788/packer,jmptrader/packer,esemplare/packer,eranchetz/packer,jamesleech/packer,dayglojesus/packer,mansunkuo/packer,mgk/packer,kgrvamsi/packer,boumenot/packer,fnoeding/packer,rnaveiras/packer,lantrix/packer,btd/packer,legal90/packer,ChrisLundquist/packer,zeliff/packer,bryson/packer,oliviertremblay/packer,Cbeck527/packer,avldya/packer,noplay/packer,gbarberi/packer,mkuzmin/packer,dev-head/packer,legal90/packer,Cbeck527/packer,p1-nico/packer,evertrue/packer,kpettijohn/packer,sobrinho/packer,danschaffer/packer,pvandervelde/packer,leroux/packer,pecigonzalo/packer,blairham/packer,ChrisLundquist/packer,jmptrader/packer,sgirones/packer,samdunne/packer,ttaylor249/packer,jarl-dk/packer,yoctocloud/packer,jarl-dk/packer,avldya/packer,yoctocloud/packer,BayanGroup/packer,zeliff/packer,arizvisa/packer,evertrue/packer,c22/packer,cyberhouse/packer,sgirones/packer,feateds/packer,jszwedko/packer,jen20/packer,btd/packer,mohae/packer,higebu/packer,hasJackb/packer,mvanholsteijn/packer,blairham/packer,LinusU/packer,Akasurde/packer,jen20/packer,ChrisLundquist/packer,routelastresort/packer,sean-/packer,bryson/packer,jimmythedog/packer,ttaylor249/packer,mitchellh/packer,jgkim/packer,paulmey/packer,Sheile/packer,grange74/packer,jamesbishopp/packer,hashicorp/packer,paulmey/packer,paulvollmer/packer,vtolstov/packer,zhuzhih2017/packer,dave2/packer,Xiol/packer,paulmey/packer,youhong316/packer,grubernaut/packer,dantran/packer,israelshirk/packer,henrysher/packer,mwhooker/packer,pearkes/packer,ttaylor249/packer,pearkes/packer,ricardclau/packer,bensojona/packer,ephemeralsnow/packer,visioncritical/packer,threatstream/packer,timsutton/packer,hasJackb/packer,gbarberi/packer,bryson/packer,DualSpark/packer,beni55/packer,lantrix/packer,higebu/packer,hashicorp/packer,markpeek/packer,trumant/packer,zhuzhih2017/packer,visioncritical/packer,aneeshusa/packer,noplay/packer,Silver90/packer,atlassian/packer,grubernaut/packer,gildas/packer-hyperv,rrva/packer,aneeshusa/packer,jen20/packer,boumenot/packer,taliesins/packer,bhcleek/packer,timsutton/packer,arizvisa/packer,pearkes/packer,burnzy/packer,grange74/packer,dev-head/packer,jasonchaffee/packer,AlphaStaxLLC/packer,DualSpark/packer,c22/packer,ricardclau/packer,mohae/packer,jonathankarsh/packer,justincampbell/packer,beni55/packer,higebu/packer,hasJackb/packer,uber/packer,bradparks/packer__create_vm_for_aws_docker_vagrant_etc,tb3088/packer,pvanbuijtene/packer,sequenceiq/packer,mafrosis/packer,jgkim/packer,KFishner/packer,jen20/packer,paulmey/packer,mayflower/packer,oliviertremblay/packer,marc-ta/packer,sneal/packer,kpettijohn/packer,jonathankarsh/packer,grubernaut/packer,sneal/packer,ldejager/packer,mefellows/packer,noplay/packer,rnaveiras/packer,sansb/packer,trumant/packer,yonglehou/packer,hashicorp/packer,pieter-lazzaro/packer,dayglojesus/packer,visioncritical/packer,jszwedko/packer,tb3088/packer,tomwilkie/packer,mansunkuo/packer,visioncritical/packer,samdunne/packer,sean-/packer,tas50/packer,marc-ta/packer,henrysher/packer,pvanbuijtene/packer,Silver90/packer,jszwedko/packer,sneal/packer,gildas/packer-hyperv,quantang/packer,rodm/packer,bryson/packer,jasonchaffee/packer,jarl-dk/packer,jasonchaffee/packer,taliesins/packer,stagrlee/packer,markpeek/packer,justincampbell/packer,ephemeralsnow/packer,paulvollmer/packer,danschaffer/packer,dev-head/packer,tb3088/packer,tracyde/packer,tas50/packer,henrysher/packer,legal90/packer,dragon788/packer,noplay/packer,jamesleech/packer,BayanGroup/packer,ricardclau/packer,rnaveiras/packer,youhong316/packer,Akasurde/packer,pvanbuijtene/packer,bryson/packer,rrva/packer,pieter-lazzaro/packer,AlphaStaxLLC/packer,dantran/packer,DualSpark/packer,grange74/packer,samdunne/packer,threatstream/packer,bensojona/packer,uber/packer,orivej/packer,KohlsTechnology/packer,dantran/packer,bradparks/packer__create_vm_for_aws_docker_vagrant_etc,rnaveiras/packer,justincampbell/packer,hasJackb/packer,ldejager/packer,bensojona/packer,tas50/packer,jimmythedog/packer,dave2/packer,jsternberg/packer,sean-/packer,gbarberi/packer,marc-ta/packer,vtolstov/packer,mkuzmin/packer,Cbeck527/packer,monkeylittleinc/packer,napramirez/packer