Merge branch 'stable-3.1'

* stable-3.1:
  Bump Bazel version to 2.2.0

Change-Id: I077fb35f38baf734e374d891ad6adce650ea138b

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index ec50441..2bfdfe0 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,7 +3,7 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "300de940c226c4ef7f0ce4baa90e278ae0fa840c",
+    commit = "f30a992da9fc855dce819875afb59f9dd6f860cd",
     #local_path = "/home/<user>/projects/bazlets",
 )