Add roles and privileges required for monitoring

This replicates the RBAC changes applied to the operator in
https://github.com/submariner-io/submariner-operator/pull/1416

Fixes: #191
Signed-off-by: Stephen Kitt <skitt@redhat.com>

submariner-operator/templates/rbac.yaml

@@ -439,6 +439,21 @@ rules:
     verbs:
       - get
       - list
+  - apiGroups:
+      - ""
+    resources:
+      - namespaces
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - monitoring.coreos.com
+    resources:
+      - servicemonitors
+    verbs:
+      - get
+      - create
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
@@ -459,6 +474,29 @@ roleRef:
   name: {{ template "submariner.fullname" . }}
 ---
 apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: submariner-metrics-reader
+  namespace: {{ .Release.Namespace }}
+rules:
+  - apiGroups: [""]
+    resources: ["pods", "services", "endpoints"]
+    verbs: ["get", "list", "watch"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: read-submariner-metrics
+subjects:
+  - kind: ServiceAccount
+    name: prometheus-k8s
+    namespace: openshift-monitoring
+roleRef:
+  kind: Role
+  name: submariner-metrics-reader
+  apiGroup: rbac.authorization.k8s.io
+---
+apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
 metadata:
   name: {{ template "submariner.fullname" . }}:gateway