RHOAIENG-1687- Add DSPO CI tests against custom pip server behind a self-signed cert

[VaniHaripriya]

The issue resolved by this Pull Request:

Resolves RHOAIENG-1687

Description of your changes:

1. Added Pypi server and nginx resources to github resources to deploy custom pip server behind a self-signed cert using nginx reverse proxy.
2. Added new github action to Kind-integration.yaml to deploy custom pip server.
3. Added a new pipeline with PIP_INDEX_URL as the custom pip server.
4. Uploaded the new pipeline and created another test to verify the completion of the pipeline run.

Testing instructions

Please follow the instructions from here to run the integration tests in local. It can also be verified by looking at the "KinD DSPO/DSP Integration Tests" workflow run in this PR.

Checklist

• The commits are squashed in a cohesive manner and have meaningful messages.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[hbelmiro]

Just a few nitpicks.

[HumairAK]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: HumairAK

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