feat: allow hiding "All namespaces" in namespaces dropdown list

[avanish23]

Closes #8894
With this PR a new option is enabled in the global setting to hide the all-namespaces option in the namespaces dropdown menu in UI.
Briefly explain why this is required
Hides all namespace fields in the namespace selection dropbox to avoid accidental selection in large clusters and prevent OOM errors.

/kind feature

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: avanish23
Once this PR has been reviewed and has the lgtm label, please assign shu-mutou 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

[k8s-ci-robot]

Welcome @avanish23!

It looks like this is your first PR to kubernetes/dashboard 🎉. 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/dashboard 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. 😃

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 37.10%. Comparing base (b5e9919) to head (6732017).
Report is 8 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9547      +/-   ##
==========================================
+ Coverage   37.09%   37.10%   +0.01%     
==========================================
  Files         283      283              
  Lines       11830    11833       +3     
  Branches      202      201       -1     
==========================================
+ Hits         4388     4391       +3     
  Misses       7167     7167              
  Partials      275      275              

[floreks]

This feels like a hacky workaround. We are working on introducing a dynamic cache that should greatly improve responsiveness in large clusters. However, storing cached data will probably require greater memory limits.

[avanish23]

/retest

[k8s-ci-robot]

@avanish23: Cannot trigger testing until a trusted user reviews the PR and leaves an /ok-to-test message.

In response to this:

/retest

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.

[avanish23]

/kind feature

[avanish23]

This feels like a hacky workaround. We are working on introducing a dynamic cache that should greatly improve responsiveness in large clusters. However, storing cached data will probably require greater memory limits.

Yes, I agree. This could be treated as a temporary workaround until we have the fix you are talking about.
Do you have any potential issues/concerns this could bring up?

[floreks]

Ye, I don't like introducing temporary flags that will be deprecated and removed shortly after being introduced. It can be confusing. Also, we are trying to avoid container flags that directly manipulate the UI. It should probably be done in a different way. Possibly via settings.

[avanish23]

Ok, this makes sense to be using setting instead. I think it should be added as part of the global setting.
Let me do it that way.

Update: I have made changes to use the settings instead of the container flags.
@floreks looking for reviews.
Thanks!