Build with plugin API 2.12 final release

Change-Id: Id212745732fe663b458fa53cb08cc86ca43ef6f0
(cherry picked from commit dc64a24f902c406699ce85aee61e70cf21728d4d)

lib/gerrit/BUCK

diff --git a/lib/gerrit/BUCK b/lib/gerrit/BUCK
index ae59eba..f1ab768 100644
--- a/lib/gerrit/BUCK
+++ b/lib/gerrit/BUCK
@@ -1,11 +1,12 @@
 include_defs('//bucklets/maven_jar.bucklet')
 
-VER = '2.12-SNAPSHOT'
-REPO = MAVEN_LOCAL
+VER = '2.12'
+REPO = MAVEN_CENTRAL
 
 maven_jar(
   name = 'plugin-api',
   id = 'com.google.gerrit:gerrit-plugin-api:' + VER,
+  sha1 = '8ce1f6e65078bbcf03a1758f96b3ebca19b7fe3c',
   attach_source = False,
   repository = REPO,
   license = 'Apache2.0',
@@ -14,6 +15,7 @@
 maven_jar(
   name = 'gwtui-api',
   id = 'com.google.gerrit:gerrit-plugin-gwtui:' + VER,
+  sha1 = 'a7e7d82746b847678022242ec9eb44d1f16e8639',
   attach_source = False,
   repository = REPO,
   license = 'Apache2.0',