Type assertion safety - fix panic when key cannot be retrieved from statebag
Type assertion safety - fix panic when key cannot be retrieved from statebag

ricardclau/packer,timsutton/packer,ricardclau/packer,mitchellh/packer,timsutton/packer,bryson/packer,grubernaut/packer,timsutton/packer,bryson/packer,rnaveiras/packer,mitchellh/packer,pecigonzalo/packer,paulmey/packer,ricardclau/packer,dave2/packer,dave2/packer,bryson/packer,rnaveiras/packer,hashicorp/packer,grubernaut/packer,timsutton/packer,hashicorp/packer,dave2/packer,hashicorp/packer,rnaveiras/packer,rnaveiras/packer,timsutton/packer,paulmey/packer,ricardclau/packer,ricardclau/packer,paulmey/packer,bryson/packer,pecigonzalo/packer,bryson/packer,dave2/packer,grubernaut/packer,ricardclau/packer,dave2/packer,mitchellh/packer,timsutton/packer,paulmey/packer,paulmey/packer,grubernaut/packer,dave2/packer,pecigonzalo/packer,pecigonzalo/packer,paulmey/packer,rnaveiras/packer,grubernaut/packer,grubernaut/packer,bryson/packer,hashicorp/packer,mitchellh/packer,rnaveiras/packer,mitchellh/packer