Add Events to OpenStack's RBAC

OpenStack keeps a separate SA definition for its CCM with a permission
to patch Services. kubernetes/cloud-provider-openstack#2383 extends the
needs to also be able to create events and this patch solves that.

Author: dulek

manifests/0000_26_cloud-controller-manager-operator_04_rbac_provider_openstack.yaml

@@ -24,6 +24,13 @@ rules:
   - services
   verbs:
   - patch
+- apiGroups:
+  # Required by occm to create events
+  - ""
+  resources:
+  - events
+  verbs:
+  - create
 
 ---
 apiVersion: rbac.authorization.k8s.io/v1