Rolling onos-maven-plugin version to 1.3 for release

Change-Id: If09ac0563353b0c95c6546b9c0ae51e277690bb7
diff --git a/tools/package/maven-plugin/pom.xml b/tools/package/maven-plugin/pom.xml
index 34fae20..32f3dc7 100644
--- a/tools/package/maven-plugin/pom.xml
+++ b/tools/package/maven-plugin/pom.xml
@@ -24,7 +24,7 @@
     </parent>
 
     <artifactId>onos-maven-plugin</artifactId>
-    <version>1.3-SNAPSHOT</version>
+    <version>1.3</version>
     <packaging>maven-plugin</packaging>
 
     <description>Maven plugin for packaging ONOS applications or generating