Configure RBAC for Globalnet pods on OCP deployments

Globalnet controller now uses internal services with external-ips
to support exported services. On OCP Clusters, we require an explicit
RBAC to create services with external-ips, this PR includes the
necessary RBAC for Globalnet pods.

Related to: https://github.com/submariner-io/submariner/issues/1166
Signed-Off-by: Sridhar Gaddam <sgaddam@redhat.com>

(cherry picked from commit bf2c41115b)

submariner-operator/templates/rbac.yaml

@@ -737,6 +737,15 @@ rules:
       - get
       - list
       - watch
+  - apiGroups:
+      - network.openshift.io
+    resources:
+      - service/externalips
+    verbs:
+      - create
+      - get
+      - list
+      - delete
 ---
 {{- end -}}
 apiVersion: rbac.authorization.k8s.io/v1