[WIP] AGENT-1326: Add InternalReleaseImage templates generation during the bootstrap

[andfasano]

- What I did
Enhances the machine-config-controller bootstrap command to add conditionally the InternalReleaseImage related templates (based on the presence on the InternalReleaseImage resource and if the related feature gate has been enabled)

- How to verify it
Add the InternalReleaseImage resource in the bootstrap manifests dir (/etc/mcc/bootstrap) and enable the feature gate.

- Description for the changelog
Add support for InternalReleaseImage resource

[openshift-ci-robot]

@andfasano: This pull request references AGENT-1326 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.21.0" version, but no target version was set.

In response to this:

- What I did
Enhances the machine-config-controller bootstrap command to add conditionally the InternalReleaseImage related templates (based on the presence on the InternalReleaseImage resource and if the related feature gate has been enabled)

- How to verify it
Add the InternalReleaseImage resource in the bootstrap manifests dir (/etc/mcc/bootstrap) and enable the feature gate.

- Description for the changelog
Add support for InternalReleaseImage resource

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[openshift-merge-robot]

PR needs rebase.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-ci]

@andfasano: 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/verify	22b9f1c	link	true	/test verify
ci/prow/images	22b9f1c	link	true	/test images
ci/prow/verify-deps	22b9f1c	link	true	/test verify-deps
ci/prow/e2e-aws-ovn-upgrade	22b9f1c	link	true	/test e2e-aws-ovn-upgrade
ci/prow/e2e-gcp-op-2of2	22b9f1c	link	true	/test e2e-gcp-op-2of2
ci/prow/e2e-hypershift	22b9f1c	link	true	/test e2e-hypershift
ci/prow/e2e-gcp-op-single-node	22b9f1c	link	true	/test e2e-gcp-op-single-node
ci/prow/e2e-aws-ovn	22b9f1c	link	true	/test e2e-aws-ovn
ci/prow/e2e-gcp-op-1of2	22b9f1c	link	true	/test e2e-gcp-op-1of2
ci/prow/bootstrap-unit	22b9f1c	link	false	/test bootstrap-unit
ci/prow/okd-scos-images	22b9f1c	link	true	/test okd-scos-images
ci/prow/security	22b9f1c	link	false	/test security
ci/prow/unit	22b9f1c	link	true	/test unit

Full PR test history. Your PR dashboard.

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[andfasano]

Addressed in #5419