Addressing request to extend testing options for functional-test automation

[ilrudie]

What type of PR is this?

Uncomment only one /kind <> line, hit enter to put that in a new line, and remove leading whitespace from that line:

/kind bug
/kind cleanup
/kind deprecation

/kind design

/kind documentation
/kind feature

What this PR does / why we need it:
The PR addresses a request to allow running code specific to a test or set of tests as required to setup, teardown or reset (run in between tests) the environment. This would allow arbitrary adjustment to the test namespace such that tests pass/fail as expected. An example might be adding a label which a policy looks for before allowing/denying the request.

To achieve this the functional-tests.yaml format was significantly altered. There is no backward compatibility to the old format however the existing tests were copied over into the new format to ensure they continue to run in CI.

Which issue(s) this PR fixes:

Fixes #38

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

NONE

Additional documentation e.g., usage docs, etc.:
This gist has been created as an example/template for how to have code run by the functional testing framework if your tests require it. It is optional.

If you do not require any special scripts to adjust the environment for your tests you may leave the script field blank in the manifest or omit the script: line entirely and the functional testing will run as it did prior to this PR.

The script should be placed in testing/resource/scripts/user_script and then be reference in the yaml by name not by full path.

example: for a deployment script you might have a script like testing/deployments/scripts/deploy-pass.sh and the resulting manifest should look like:

resources:
  - kind: deployments
    desired: pass
    script: deploy-pass.sh
    manifests:
      - test-deploy01.yaml
      - test-deploy03.yaml

[phenixblue]

Thanks for the PR!

Looks mostly good. A couple of generic cleanup things and some consistency/style nits that I've pointed out in the comments. Looks like you need to rebase as well.

[phenixblue]

Consistency nit, space after # for comments.

[phenixblue]

Need a rebase, but otherwise LGTM

[phenixblue]

/lgtm