Rook pulled their beta charts, switch to release and fix later

Change-Id: I02217b38840ea943673591f5a1c425a916a879ce
diff --git a/storage/rook-operator/requirements.yaml b/storage/rook-operator/requirements.yaml
index a16d9c4..0e3f32a 100644
--- a/storage/rook-operator/requirements.yaml
+++ b/storage/rook-operator/requirements.yaml
@@ -15,5 +15,5 @@
 
 dependencies:
 - name: rook-ceph
-  version: 0.8.1
-  repository: https://charts.rook.io/beta
+  version: 1.2.6
+  repository: https://charts.rook.io/release