Update bazlets to latest revision on master

This fixes a build failure [1] with the latest bazel caused by
deprecation of the set() constructor.

Also, switch to consuming gerrit API from local maven so that
the 2.16-SNAPSHOT version is used.

[1] http://paste.openstack.org/show/624532/

Change-Id: Iad690244d283ae898098530ad3f68ab463ff27c6

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 7ea896f..95cf81a 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,15 +3,15 @@
 load("//:bazlets.bzl", "load_bazlets")
 
 load_bazlets(
-    commit = "e15ad03897f040435d6c5e808b697b1125b964c1",
+    commit = "42bffc66c0e92753133e4cea2debe65abc359c4d",
     # local_path = "/home/<user>/projects/bazlets",
 )
 
 # Snapshot Plugin API
-#load(
-#    "@com_googlesource_gerrit_bazlets//:gerrit_api_maven_local.bzl",
-#    "gerrit_api_maven_local",
-#)
+load(
+    "@com_googlesource_gerrit_bazlets//:gerrit_api_maven_local.bzl",
+    "gerrit_api_maven_local",
+)
 
 # Release Plugin API
 load(
@@ -20,7 +20,7 @@
 )
 
 # Load release Plugin API
-gerrit_api()
+#gerrit_api()
 
 # Load snapshot Plugin API
-#gerrit_api_maven_local()
+gerrit_api_maven_local()