Add support for passing environment variables to GOSS execution

EleanorRigby commented 4 years ago

Helps support GOSS feature for templating with env variables https://github.com/aelsabbahy/goss/blob/master/docs/manual.md#templates

Available variables:

{{.Env}} - Containing environment variables

Also, I believe it is important to be able to modify the execution shell for any future debug/log options too.

Results from a run

 amazon-2: Env variables are OS="amazon linux" ARCH="amd64" PROVIDER="amazon"
    amazon-2: Uploading Dir packer/goss
    amazon-2: Creating directory: /tmp/goss/goss
==> amazon-2:
==> amazon-2:
==> amazon-2:
==> amazon-2: Running goss tests...
    amazon-2: Command : cd /tmp/goss && sudo ARCH="amd64" PROVIDER="amazon" OS="amazon linux"  /tmp/goss-0.3.13-linux-amd64 --gossfile goss/goss.yaml --vars /tmp/goss/goss-vars.yaml --vars-inline '{"containerd_version":"1.3.4","kubernetes_cni_source_type":"pkg","kubernetes_cni_version":"0.8.6","kubernetes_source_type":"pkg","kubernetes_version":"1.16.11"}' validate --retry-timeout 0s --sleep 1s -f json -o pretty
    amazon-2: {

EleanorRigby commented 4 years ago

cc: @codenrhoden

EleanorRigby commented 4 years ago

@fishnix : Can you review this PR? I think it is ready to merge.

YaleUniversity / packer-plugin-goss

Add support for passing environment variables to GOSS execution #33