Update Helm scripts for openshift

[rpothier]

What does this PR do?

This updates the reusable helm scripts for Openshift buy adding in the Openshift required values. They are used by the scripts in conjur-authn-k8s-client/bin/test-workflow Default values are not added for the Kubernetes platoform as they are taken from values.yaml directly and these should not be overwritten.

What ticket does this PR close?

Resolves #[relevant GitHub issues, eg 76] Works towards 248

Checklists

Change log

• [ ] The CHANGELOG has been updated, or
• [x] This PR does not include user-facing changes and doesn't require a CHANGELOG update

Test coverage

• [ ] This PR includes new unit and integration tests to go with the code changes, or
• [x] The changes in this PR do not require tests

Documentation

• [ ] Docs (e.g. READMEs) were updated in this PR, and/or there is a follow-on issue to update docs, or
• [x] This PR does not require updating any documentation

[diverdane]

@rpothier can you rebase this to latest main? That should get the GH actions CI to pass.

[rpothier]

@diverdane rebased and it is now passing.