CMP-3756: Configure MintMaker updates on RPM lockfiles

[yuumasato]

Description:

• Add a repo file so that rpms.lock.file can be properly maintained.

Rationale:

• MintMaker requires a repo file to keep rpms.lock.yaml up to date.
  The repo file is also configured with SSL variables so that RPMs behind a subscription are accessible.

• Fixes CMP-3756

Review Hints:

• https://konflux.pages.redhat.com/docs/users/mintmaker/rpm-lockfile.html#rpm-lockfile-with-rpms-that-require-subscription
• https://konflux.pages.redhat.com/docs/users/building/activation-keys-subscription.html#configuring-an-rpm-lockfile-for-hermetic-builds
• If nothing seems utterly wrong, we kinda need to merge and wait to see if MintMaker proposes a PR, 😅

[Vincent056]

/lgtm

[rhmdnd]

/lgtm

[yuumasato]

/retest

[openshift-ci]

@yuumasato: The following test 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/e2e-aws-openshift-node-compliance	e9b9632	link	true	/test e2e-aws-openshift-node-compliance

Full PR test history. Your PR dashboard.

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