Merge branch 'stable-2.15'

* stable-2.15:
  Upgrade bazlets to latest stable-2.15 to build with 2.15.7 API
  Upgrade bazlets to latest stable-2.14 to build with 2.14.17 API

Change-Id: I070710c336876051284395988f13842509cc57b5
diff --git a/WORKSPACE b/WORKSPACE
index 0115572..71333d8 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "b54eaed487d37188120da6933b97c571519954ca",
+    commit = "cc2766bbec1af19eb4d1ed2f32e4ed9a503df32b",
     #local_path = "/home/<user>/projects/bazlets",
 )