Wait for the `kubernetes` service on server start
Wait for the `kubernetes` service on server start

When starting the server for tests, we seem to race against the core
machinery to start services like the router and registry. If we manage
to start a pod before the core `kubernetes` service is up, environment
variables like `$KUBERNETES_SERVICE_HOST` and `$KUBERNETES_SERVICE_PORT`
are not present and the pod fails if it expected them. By waiting for
the `kubernetes` service, we should remove this race on server start.

Signed-off-by: Steve Kuznetsov <a7da0fca91d9933d2725d731a48cabdc9e8ffd7a@redhat.com>

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