fix: missing rbac roles

Author: loks0n

helm/betterstack-operator/templates/clusterrole.yaml

@@ -27,4 +27,9 @@ rules:
     resources:
       - secrets
     verbs: ["get","list","watch"]
+  - apiGroups:
+      - coordination.k8s.io
+    resources:
+      - leases
+    verbs: ["create","get","list","update"]
 {{- end }}