Add metrics service to deployments and fix prometheus and helm

[kannon92]

What type of PR is this?

/kind bug

What this PR does / why we need it:

a) Add metric ports to deployments for both kustomize and helm.
b) Fix prometheus so it does not assume prometheus is deployed in the kueue namespace.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

I found this issue because I was having trouble getting my kind cluster to find my metrics service.

It turns out that we were not binding the metrics service to the deployment.

This was found by checking the endpoints of kueue-controller-metrics-service and seeing that it was in fact not being used.

When we dropped kube-rbac-proxy, we dropped the creation of the metrics in the deployment spec.

I don't think this a regression as we dropped kube-rbac-proxy for 0.11. 0.10 seems to be fine.

Does this PR introduce a user-facing change?

NONE

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: kannon92
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