Update vendored_plugins.go
Update vendored_plugins.go

order alphabetically

pecigonzalo/packer,rnaveiras/packer,mitchellh/packer,rnaveiras/packer,rnaveiras/packer,hashicorp/packer,mitchellh/packer,pecigonzalo/packer,mitchellh/packer,rnaveiras/packer,rnaveiras/packer,mitchellh/packer,pecigonzalo/packer,mitchellh/packer,rnaveiras/packer,hashicorp/packer,hashicorp/packer,pecigonzalo/packer,hashicorp/packer