[maven-release-plugin] prepare release 2.2.0-beta.2

pom.xml

@@ -11,7 +11,7 @@
 
     <groupId>org.graylog.plugins</groupId>
     <artifactId>graylog-plugin-cef</artifactId>
-    <version>2.2.0-beta.2-SNAPSHOT</version>
+    <version>2.2.0-beta.2</version>
     <packaging>jar</packaging>
 
     <name>${project.artifactId}</name>
@@ -29,7 +29,7 @@
         <connection>scm:git:[email protected]:Graylog2/graylog-plugin-cef.git</connection>
         <developerConnection>scm:git:[email protected]:Graylog2/graylog-plugin-cef.git</developerConnection>
         <url>https://github.com/Graylog2/graylog-plugin-cef</url>
-        <tag>HEAD</tag>
+        <tag>2.2.0-beta.2</tag>
     </scm>
 
     <properties>