Merge branch 'stable-2.15'

* stable-2.15:
  Upgrade bazlets to latest stable-2.15 to build with 2.15.10 API

Change-Id: I05272aa34120096ec7abb6c1cb751eda906ef4e9
diff --git a/WORKSPACE b/WORKSPACE
index 85652e2..f9883a6 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "2b1d68959119920e5fa9bdfb9f0cf926bfef4929",
+    commit = "c15e64db2a87c0453427ff45f79d1ed3899b5d92",
     #local_path = "/home/<user>/projects/bazlets",
 )