[dynamic-source-ami] fix old key name in error message
[dynamic-source-ami] fix old key name in error message

c22/packer,KohlsTechnology/packer,ricardclau/packer,legal90/packer,paulmey/packer,sean-/packer,rnaveiras/packer,sneal/packer,sean-/packer,ChrisLundquist/packer,ChrisLundquist/packer,rnaveiras/packer,rnaveiras/packer,quantang/packer,tas50/packer,KohlsTechnology/packer,taliesins/packer,legal90/packer,c22/packer,ricardclau/packer,bryson/packer,tb3088/packer,taliesins/packer,bryson/packer,sean-/packer,smaato/packer,youhong316/packer,jimmythedog/packer,markpeek/packer,pvandervelde/packer,markpeek/packer,atlassian/packer,mkuzmin/packer,ChrisLundquist/packer,tsmolka/packer,c22/packer,sneal/packer,KohlsTechnology/packer,paulmey/packer,tb3088/packer,mkuzmin/packer,timsutton/packer,youhong316/packer,mitchellh/packer,life360/packer,ricardclau/packer,markpeek/packer,atlassian/packer,hashicorp/packer,pieter-lazzaro/packer,mitchellh/packer,dayglojesus/packer,life360/packer,pvanbuijtene/packer,jen20/packer,arizvisa/packer,sneal/packer,dave2/packer,legal90/packer,tsmolka/packer,mafrosis/packer,pvandervelde/packer,jimmythedog/packer,dave2/packer,p1-nico/packer,youhong316/packer,zhuzhih2017/packer,mitchellh/packer,routelastresort/packer,ricardclau/packer,dayglojesus/packer,routelastresort/packer,ChrisLundquist/packer,tsmolka/packer,atlassian/packer,life360/packer,dayglojesus/packer,hashicorp/packer,routelastresort/packer,paulmey/packer,tas50/packer,tsmolka/packer,pieter-lazzaro/packer,quantang/packer,timsutton/packer,jen20/packer,mafrosis/packer,sneal/packer,smaato/packer,youhong316/packer,KohlsTechnology/packer,mkuzmin/packer,mafrosis/packer,pvandervelde/packer,mkuzmin/packer,dayglojesus/packer,dave2/packer,sean-/packer,arizvisa/packer,mwhooker/packer,pvanbuijtene/packer,pecigonzalo/packer,zhuzhih2017/packer,ChrisLundquist/packer,sean-/packer,dayglojesus/packer,arizvisa/packer,pvandervelde/packer,timsutton/packer,p1-nico/packer,mkuzmin/packer,arizvisa/packer,rickard-von-essen/packer,life360/packer,pecigonzalo/packer,tb3088/packer,markpeek/packer,arizvisa/packer,pieter-lazzaro/packer,mitchellh/packer,pecigonzalo/packer,grubernaut/packer,paulmey/packer,tsmolka/packer,sneal/packer,sean-/packer,rnaveiras/packer,taliesins/packer,boumenot/packer,zhuzhih2017/packer,grubernaut/packer,c22/packer,p1-nico/packer,paulmey/packer,paulmey/packer,pecigonzalo/packer,zhuzhih2017/packer,mwhooker/packer,quantang/packer,c22/packer,tas50/packer,bryson/packer,p1-nico/packer,tb3088/packer,pvanbuijtene/packer,ricardclau/packer,youhong316/packer,pvandervelde/packer,pieter-lazzaro/packer,dave2/packer,boumenot/packer,pvandervelde/packer,grubernaut/packer,arizvisa/packer,boumenot/packer,jimmythedog/packer,grubernaut/packer,pvanbuijtene/packer,p1-nico/packer,boumenot/packer,legal90/packer,ChrisLundquist/packer,smaato/packer,timsutton/packer,smaato/packer,legal90/packer,tas50/packer,dave2/packer,jen20/packer,rnaveiras/packer,ricardclau/packer,quantang/packer,taliesins/packer,taliesins/packer,pieter-lazzaro/packer,boumenot/packer,hashicorp/packer,mafrosis/packer,routelastresort/packer,atlassian/packer,markpeek/packer,jen20/packer,tb3088/packer,mwhooker/packer,mkuzmin/packer,grubernaut/packer,tas50/packer,jimmythedog/packer,tas50/packer,atlassian/packer,tb3088/packer,smaato/packer,rnaveiras/packer,rickard-von-essen/packer,jen20/packer,rickard-von-essen/packer,jimmythedog/packer,pvanbuijtene/packer,quantang/packer,mwhooker/packer,zhuzhih2017/packer,youhong316/packer,markpeek/packer,grubernaut/packer,p1-nico/packer,bryson/packer,tsmolka/packer,bryson/packer,c22/packer,life360/packer,taliesins/packer,mafrosis/packer,atlassian/packer,rickard-von-essen/packer,hashicorp/packer,rickard-von-essen/packer,zhuzhih2017/packer,KohlsTechnology/packer,smaato/packer,mitchellh/packer,pieter-lazzaro/packer,timsutton/packer,timsutton/packer,KohlsTechnology/packer,routelastresort/packer,bryson/packer,dave2/packer,jen20/packer,mwhooker/packer