RELATED_IMAGE support and bundle warning fixes

[dprince]

This PR adds support for RELATED_IMAGES to support offline airgapped images.

Additionally updates were made to bundle generation so that it runs cleanly without WARNINGS:

• Update API domain from lightspeed.openstack.org to openstack.org and change group from api to lightspeed.
  -Remove generated bundle files from git and add them to .gitignore
  as these are generated files and do not need to be tracked.
  -set minimum Kubernetes version to 1.31.0 (corresponds to OCP 4.18)

Jira: OSPRH-25526

[openshift-ci]

Hi @dprince. Thanks for your PR.

I'm waiting for a openstack-lightspeed member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[lpiwowar]

/ok-to-test

[dprince]

/test ci-index-openstack-lightspeed-bundle

[lpiwowar]

@dprince if you rebase on top of latest main the Kuttl tests should work now :) -> #76

[lpiwowar]

LGTM, thank you for the help!

I think that as part of the ticket, we also have to deal with setting of the OPENSHIFT_LIGHTSPEED_OPERATOR_VERSION. But I assume we can do this similarly as the openstack-operator does for the OPENSTACK_RELEASE_VERSION in the bundle target in Makefile [1]. I can propose a separate PR.

[1] https://github.com/openstack-k8s-operators/openstack-operator/blob/a8f825c5a52c95a3e9a589164699e359065446f0/Makefile#L402

[umago]

/approve
/lgtm

[umago]

/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprince, lpiwowar, umago

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