[occm] - add annotation for custom octavia listener tags

[dd-georgiev]

Added support for new annotation which provides the ability to add tags when the load balancer is created. Those tags affect the load balancer and the listener. The rest of the resources are not tagged

What this PR does / why we need it:
#2327

Special notes for reviewers:

1. As far as I understood(based on Slack conversation) this functionality will be expanded. That is more features will be added.
2. Testing notes - There is e2e test, but basically adding the annotation specified in the docs, must result in having one or multiple tags on the load balancer and listener resource in openstack.
3. No extra validation is done, as the openstack document doesn't mention any excluded chars(as far as I managed to understand). There is edge-case mentioned in the openstack docs, but I don't think they apply for the LB resources. Namely:

Filtering resources with a tag whose name contains a comma is not supported. Thus, do not put such a tag name to resources.
Source: https://docs.openstack.org/mitaka/networking-guide/ops-resource-tags.html#limitations

But I don't think this will impact us, since "," is used to split the tags. Hence tag containing "," cannot exist. I didn't document this behavior as it fells like common sense. Also the docs are coming from the Mitaka project.
4. I'm not sure if this change is big enough for release notes, but I can add them if necessary

Release note:

NONE

[linux-foundation-easycla]

• ✅login: dd-georgiev / (7a04161)

The committers listed above are authorized under a signed CLA.

[k8s-ci-robot]

Welcome @dd-georgiev!

It looks like this is your first PR to kubernetes/cloud-provider-openstack 🎉. Please refer to our pull request process documentation to help your PR have a smooth ride to approval.

You will be prompted by a bot to use commands during the review process. Do not be afraid to follow the prompts! It is okay to experiment. Here is the bot commands documentation.

You can also check if kubernetes/cloud-provider-openstack has its own contribution guidelines.

You may want to refer to our testing guide if you run into trouble with your tests not passing.

If you are having difficulty getting your pull request seen, please follow the recommended escalation practices. Also, for tips and tricks in the contribution process you may want to read the Kubernetes contributor cheat sheet. We want to make sure your contribution gets all the attention it needs!

Thank you, and welcome to Kubernetes. 😃

[k8s-ci-robot]

Hi @dd-georgiev. Thanks for your PR.

I'm waiting for a kubernetes 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.

I understand the commands that are listed here.

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.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign dulek for approval. For more information see the Kubernetes Code Review Process.

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

Needs approval from an approver in each of these files:

• OWNERS

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

[dulek]

/ok-to-test

[dulek]

Okay, so this needs a release note announcing the feature, that's for sure.

[dd-georgiev]

I've converted this into draft.
Reason being I'm working on the extended requirement to support the ability to change the tags when the annotation is changed. This functionality will require changes to this code as well.

[k8s-ci-robot]

PR needs rebase.

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-sigs/prow repository.

[k8s-triage-robot]

The Kubernetes project currently lacks enough contributors to adequately respond to all PRs.

This bot triages PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the PR is closed

You can:

• Mark this PR as fresh with /remove-lifecycle stale
• Close this PR with /close
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle stale

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all PRs.

This bot triages PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the PR is closed

You can:

• Mark this PR as fresh with /remove-lifecycle rotten
• Close this PR with /close
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/lifecycle rotten

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the PR is closed

You can:

• Reopen this PR with /reopen
• Mark this PR as fresh with /remove-lifecycle rotten
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/close

[k8s-ci-robot]

@k8s-triage-robot: Closed this PR.

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages PRs according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the PR is closed

You can:

• Reopen this PR with /reopen
• Mark this PR as fresh with /remove-lifecycle rotten
• Offer to help out with Issue Triage

Please send feedback to sig-contributor-experience at kubernetes/community.

/close

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-sigs/prow repository.

[m-kratochvil]

@dd-georgiev will you re-open, or is there new PR? I want to make sure I'm tracking the correct place for this..

[dd-georgiev]

Hello @m-kratochvil,
The idea was as mentioned in the PR to expand the code to support more requirements.
Again as mentioned in the PR:

Those tags affect the load balancer and the listener. The rest of the resources are not tagged.

Unfortunately life happened and I'm unable to continue working on the extra implementation for the time being.

You can find more information about the further changes in the following slack discussion:
https://kubernetes.slack.com/archives/C0LSA3T7C/p1713791973852479

I can reopen the PR if you find this useful. Some work related to tagging was done in another PR as well:
#2577

For me, this PR brings value only if somebody is going to extend the work to meet the requirements imposed in the slack discussion, but I will leave this to your judgment.