Multiple controllers update APIs simultaneously

[excieve]

When there's more than one ingress controller pod running, all of them will try to apply the same changes once they're detected. While this doesn't seem to cause issues at small scale, this may bring troubles with conflicting changes. Not mentioning that it's not quite efficient.

A leader pod should be elected to apply the changes, with others taking over only in case of leader failing.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs, please comment if you would like this issue to remain open. Thank you for your contributions.

[excieve]

This is not stale.