add some tests for packer_plugin_path
add some tests for packer_plugin_path

mitchellh/packer,rnaveiras/packer,paulmey/packer,pecigonzalo/packer,ricardclau/packer,paulmey/packer,paulmey/packer,rnaveiras/packer,rnaveiras/packer,grubernaut/packer,paulmey/packer,pecigonzalo/packer,rnaveiras/packer,ricardclau/packer,rnaveiras/packer,ricardclau/packer,paulmey/packer,ricardclau/packer,mitchellh/packer,hashicorp/packer,hashicorp/packer,pecigonzalo/packer,rnaveiras/packer,grubernaut/packer,mitchellh/packer,mitchellh/packer,grubernaut/packer,ricardclau/packer,grubernaut/packer,ricardclau/packer,paulmey/packer,grubernaut/packer,hashicorp/packer,hashicorp/packer,mitchellh/packer,pecigonzalo/packer,grubernaut/packer