feat: expose gitops operator metrics to openshift-monitoring stack

[jaideepr97]

What type of PR is this?

Uncomment only one /kind line, and delete the rest.
For example, > /kind bug would simply become: /kind bug

/kind bug
/kind cleanup
/kind failing-test
/kind enhancement
/kind documentation
/kind code-refactoring

What does this PR do / why we need it:

Note: this PR has a dependency on #556

This PR contains all the changes required to make gitops-operator metrics accessible through the openshift-monitoring stack and viewable within the Openshift console. The included changes are as follows:

• Change gitops-operator's default namespace to openshift-gitops-operator and enable cluster monitoring out of the box
• Add kube-rbac-proxy container to the operator deployment to protect the operator's /metrics endpoint
• Add the following manifests to the bundle to allow openshift-monitoring stack to pick up the metrics:
  • metrics service
  • service monitor
  • role and rolebinding to allow openshift-monitoring to access operator's metrics endpoint

Have you updated the necessary documentation?

• Documentation update is required by this PR.
• Documentation has been updated.

Which issue(s) this PR fixes:

Fixes #?

Test acceptance criteria:

• Unit Test
• E2E Test

How to test changes / Special notes to the reviewer:

• Build an operator containing these manifest changes
• install the operator on a cluster
• go the admin > observe > metrics tab of the console
• confirm you are able to query active_argocd_instances_total and see the graph for it

[iam-veeramalla]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: iam-veeramalla

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [iam-veeramalla]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[jaideepr97]

/retest

[openshift-ci]

New changes are detected. LGTM label has been removed.

[jaideepr97]

/retest

[varshab1210]

/retest

[openshift-ci]

@jaideepr97: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/v4.10-kuttl-sequential	542f688	link	true	/test v4.10-kuttl-sequential
ci/prow/v4.11-kuttl-sequential	542f688	link	true	/test v4.11-kuttl-sequential
ci/prow/v4.11-kuttl-parallel	542f688	link	true	/test v4.11-kuttl-parallel
ci/prow/v4.10-kuttl-parallel	542f688	link	true	/test v4.10-kuttl-parallel
ci/prow/v4.14-kuttl-sequential-periodic	542f688	link	true	/test v4.14-kuttl-sequential-periodic
ci/prow/v4.14-kuttl-parallel	a0c3ada	link	true	/test v4.14-kuttl-parallel
ci/prow/v4.14-kuttl-sequential	a0c3ada	link	true	/test v4.14-kuttl-sequential
ci/prow/v4.13-e2e	ea5e579	link	true	/test v4.13-e2e
ci/prow/v4.13-kuttl-sequential	ea5e579	link	true	/test v4.13-kuttl-sequential
ci/prow/v4.12-kuttl-sequential	ea5e579	link	true	/test v4.12-kuttl-sequential

Full PR test history. Your PR dashboard.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository. I understand the commands that are listed here.