Upgrade bazlets to latest master to build with 3.0.0-rc1 API

Change-Id: Iaa0374ccb653e2b2b1882647e544b88999c524f3

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 87a607c..9681c83 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "316b66f48048c1ee05d8525568f2533cff5ea252",
+    commit = "8808e401a9c68a02ae541c36a36dd672a171b7e7",
     #local_path = "/home/<user>/projects/bazlets",
 )