added integration tests

[VedRatan]

Description

This PR adds up Integration tests for si, sib controllers. Tests are written using Chainsaw

Fixes #16

Does this PR introduce a breaking change?

Checklist

• PR title follows the <type>: <description> convention
• I use conventional commits in my commit messages
• I have updated the documentation accordingly
• I Keep It Small and Simple: The smaller the PR is, the easier it is to review and have it merged
• I have performed a self-review of my code
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

Additional information for reviewer

Mention if this PR is part of any design or a continuation of previous PRs

`test`

[anurag-rajawat]

Put these controllers' tests in a separate tests/controllers directory.

[anurag-rajawat]

To enable testing within our CI pipeline, we need to provision a k8s cluster. So add jobs in our CI to provision a k8s cluster and leverage chainsaw GHA to run tests.
Additionally, add/update the make test target to use chainsaw to run tests.