prepare v2.2.2 release

Change-Id: I367e4748d9454bf30580091141853cd90cfe79b4

Author: mildis

pom.xml

@@ -6,7 +6,7 @@
 	<groupId>fr.techad</groupId>
 	<artifactId>sonar-gerrit-plugin</artifactId>
 	<packaging>sonar-plugin</packaging>
-	<version>2.2.2-SNAPSHOT</version>
+	<version>2.2.2</version>
 
 	<name>Sonar Gerrit Plugin</name>
 	<description>Sonar will rate your gerrit patch set and comment on found alerts.</description>