Fix stable-2.12 build and tests

Reference Gerrit plugin API 2.12.2 from maven central.

Upgrade the EasyMock version to fix this compilation error:
  PublisherExceptionTest.java:60: error: cannot find symbol
    captor = EasyMock.newCapture();

Change-Id: Iaa9e12f60a3e2537993c5ee0ed5ed57f608c2a29
diff --git a/lib/easymock/BUCK b/lib/easymock/BUCK
index 3cf45ae..0a4eb4d 100644
--- a/lib/easymock/BUCK
+++ b/lib/easymock/BUCK
@@ -2,8 +2,8 @@
 
 maven_jar(
   name = 'easymock',
-  id = 'org.easymock:easymock:3.2',
-  sha1 = '00c82f7fa3ef377d8954b1db25123944b5af2ba4',
+  id = 'org.easymock:easymock:3.4',
+  sha1 = '9fdeea183a399f25c2469497612cad131e920fa3',
   license = 'DO_NOT_DISTRIBUTE',
   attach_source = False,
   deps = [
diff --git a/lib/gerrit/BUCK b/lib/gerrit/BUCK
index 86cef3d..afef11a 100644
--- a/lib/gerrit/BUCK
+++ b/lib/gerrit/BUCK
@@ -1,7 +1,7 @@
 include_defs('//bucklets/maven_jar.bucklet')
 
-VER = '2.12-SNAPSHOT'
-REPO = MAVEN_LOCAL
+VER = '2.12.2'
+REPO = MAVEN_CENTRAL
 
 maven_jar(
   name = 'plugin-api',
diff --git a/pom.xml b/pom.xml
index 8f3f043..4bf0f74 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
   <groupId>com.googlesource.gerrit.plugins.quota</groupId>
   <artifactId>quota</artifactId>
   <packaging>jar</packaging>
-  <version>2.12-SNAPSHOT</version>
+  <version>2.12.2</version>
   <name>quota</name>
 
   <properties>
@@ -83,7 +83,7 @@
     <dependency>
       <groupId>org.easymock</groupId>
       <artifactId>easymock</artifactId>
-      <version>3.2</version>
+      <version>3.4</version>
       <scope>test</scope>
     </dependency>
     <dependency>