Temporarily disable metrics endpoint

[ebaron]

This PR temporarily disables the metrics endpoint until #180 is resolved. This is done by setting the metrics address to 0. From manager.Options:

	// MetricsBindAddress is the TCP address that the controller should bind to
	// for serving prometheus metrics.
	// It can be set to "0" to disable the metrics serving.
	MetricsBindAddress string

With metrics disabled, the kube-rbac-proxy is no longer required, so this PR disables it. This avoids the symptoms of #180.

[andrewazores]

There are some other auth_proxy_*.yamls in config/rbac which look like they can be commented out in the kustomization.yaml too. I still have a service/container-jfr-operator-controller-manager-metrics-service for instance, which I don't think is needed if the kube-rbac-proxy container isn't running, right?

[ebaron]

Good eye. Those are commented out too now.

[andrewazores]

I think the bundle needs to be regenerated as well to remove the YAMLs which have already been copied. I tried make bundle on my own and it didn't remove them, but rm -rf bundle && make bundle looks like it regenerates the expected result in the end. I built/bundled/deployed this myself and everything looks good from a manual check over, so I think that's the last thing needed here.

[ebaron]

Thanks for noticing that too. Starting with a fresh bundle directory removed the leader election role/binding files as well. I noticed that this gets folded into the role defined in the CSV though, so those files should be unnecessary.