[BUG] GSLB is not updated when Ingress has change

[kuritka]

We found a bug where GSLB does not update itself (specifically annotations section) when the ingress has changed.

The problem with the annotations was that the rancher kept changing the annotations and k8gb kept changing them back. They were stuck in a loop.

The bug is located here:

k8gb/controllers/gslb_controller.go

Lines 234 to 237 in 8820bba

	log.Info().
	Str("ingress", a.GetName()).
	Msg("Ingress does not exist anymore. Skipping Glsb creation...")
	return

• implement an update functionality of the GSLB as the ingress changes.
• Implement the necessary tests to make sure that the GSLB update is done exactly as we need.