Bumping onos-maven-plugin version to 1.3-SNAPSHOT

Change-Id: I5ae8923f9c7339e1f72a332f5bc22d7faacf0e0f
diff --git a/tools/package/maven-plugin/pom.xml b/tools/package/maven-plugin/pom.xml
index 46dcf09..34fae20 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>1.2</version>
+    <version>1.3-SNAPSHOT</version>
     <packaging>maven-plugin</packaging>
 
     <description>Maven plugin for packaging ONOS applications or generating