Version 2.12.0-133.6.beta

* Cherry-pick refs/changes/04/176504/2 to beta
* Cherry-pick 4c2edfd5b9fe33139aad7e9ca021bd8530f47986 to beta
* Cherry-pick 17b43ca84677781ade9d4da48d32d0ea950ea2e0 to beta
* Cherry-pick abe144c30fdcdfba3573a36a59da5d0ac6e28c5f to beta
diff --git a/tools/VERSION b/tools/VERSION
index 028a34a..4b12615 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 12
 PATCH 0
 PRERELEASE 133
-PRERELEASE_PATCH 2
\ No newline at end of file
+PRERELEASE_PATCH 6
\ No newline at end of file