Log on new artifact and failure recovery

[stefanprodan]

Fix: #757

[darkowlzz]

You can also add logs in the OCI helmrepo reconciler around

source-controller/controllers/helmrepository_controller_oci.go

Lines 231 to 237 in b7281de

	if !conditions.IsReady(oldObj) && conditions.IsReady(obj) {
	r.Eventf(obj, corev1.EventTypeNormal, ready.Reason, ready.Message)
	}
	// Became not ready from ready.
	if conditions.IsReady(oldObj) && !conditions.IsReady(obj) {
	r.Eventf(obj, corev1.EventTypeWarning, ready.Reason, ready.Message)
	}

.
These are a little different from the other reconcilers. It's triggered whenever the object toggles the ready state. I think it'd be good to log that as well.

UPDATE: Since the events around it are not annotated, you can just use r.eventLogf().

[darkowlzz]

Result of this:

{
  "level": "info",
  "ts": "2022-06-03T18:41:33.477+0530",
  "logger": "controller.gitrepository",
  "msg": "stored artifact for commit 'Merge pull request #200 from stefanprodan/release-...'",
  "reconciler group": "source.toolkit.fluxcd.io",
  "reconciler kind": "GitRepository",
  "name": "podinfo",
  "namespace": "default"
}

[darkowlzz]

LGTM!