Konnect: Deal with API quota exhaustion gracefully

[pmalek]

Problem statement

Currently, requests against Konnect do not take API rate limiting under account.

That means that when 429s start coming in from Konnect then no particular back off strategy is going to kick in.

This issue tracks the effort to implement such a mechanism so that hitting API quota is handled gracefully via most likely

return ctrl.Result{
	RequeueAfter: <?>,
}, nil

Acceptance criteria

• As a user I can expect graceful handling of API quota exhaustion