Add PodDisruptionBudget permissions to cluster-olm-operator

The cluster-olm-operator needs permissions to manage PodDisruptionBudgets
as they are now part of the static operand assets for catalogd and
operator-controller to ensure high availability during upgrades.

This change adds the necessary RBAC permissions for the policy API group
to create, update, patch, get, list, watch, and delete poddisruptionbudgets.

Fixes: openshift/operator-framework-operator-controller#568

Author: jianzhangbjz

manifests/0000_51_olm_02_operator_clusterrole.yaml

@@ -297,3 +297,15 @@ rules:
     - list
     - watch
     - delete
+  - apiGroups:
+    - policy
+    resources:
+    - poddisruptionbudgets
+    verbs:
+    - create
+    - update
+    - patch
+    - get
+    - list
+    - watch
+    - delete