Ensure etcd operator resolves dns over TCP

The etcd operator pod might start before the Kuryr admission
controller is running, resulting in no dnsConfig option injected
on the pod spec to allow DNS resolution over TCP, and consequently
failure on DNS resolution.

bindata/network/kuryr/010-admission-controller.yaml

@@ -37,6 +37,7 @@ spec:
         - --tls-private-key-file=/etc/webhook/tls.key
         - --tls-cert-file=/etc/webhook/tls.crt
         - --ns=openshift-insights
+        - --ns=openshift-etcd-operator
         volumeMounts:
         - name: webhook-certs
           mountPath: /etc/webhook