Updated metrics version

Author: mohanvive

pom.xml

@@ -1289,7 +1289,7 @@
         <siddhi.version>3.1.0-SNAPSHOT</siddhi.version>
 
         <!-- Carbon metrics version -->
-        <carbon.metrics.version>1.2.2-SNAPSHOT</carbon.metrics.version>
+        <carbon.metrics.version>1.2.2</carbon.metrics.version>
 
         <orbit.version.json>2.0.0.wso2v1</orbit.version.json>
         <carbon.p2.plugin.version>1.5.4</carbon.p2.plugin.version>