Upgrade bazlets to latest stable-2.16

Fix genrule2 to clean up temporary folder content

Change-Id: I1d186a2082b364f7acc2d99c20ec0211efebbfd2

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 7df641c..521d913 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "ec989bb514e39447764057c60d3f9959bff8e153",
+    commit = "e1360b49f90930e280f6a43380ab533705c85446",
     #local_path = "/home/<user>/projects/bazlets",
 )