Merge branch 'stable-2.15' into stable-2.16

* stable-2.15:
  Upgrade bazlets to latest stable-2.15
  Upgrade bazlets to latest stable-2.14
  Bump Bazel version to 1.1.0

Change-Id: I81c1df7b7dab3f696655291d05417b661452de4f
diff --git a/.bazelversion b/.bazelversion
index 3eefcb9..9084fa2 100644
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +1 @@
-1.0.0
+1.1.0