subctl gather needs to be able to access the broker without credentials from the Submariner CR

[skitt]

Once we start deploying Submariner using only secrets to store access tokens, subctl gather won’t be able to directly use the information in the Submariner CR to access the broker. It will either have to retrieve the appropriate secret itself, or check to see whether one of the contexts it has access to corresponds to the broker.

[dfarrell07]

This blocks #631 and submariner-io/submariner-operator#1869.

[stale]

This issue has been automatically marked as stale because it has not had activity for 60 days. It will be closed if no further activity occurs. Please make a comment if this issue/pr is still valid. Thank you for your contributions.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further
activity occurs. Thank you for your contributions.