Bumping onos-maven-plugin to 1.7 for release

Change-Id: I9b031827667f6de40cd1cac9dcaf50888ca6a4d4
diff --git a/tools/package/maven-plugin/pom.xml b/tools/package/maven-plugin/pom.xml
index 5a287d0..46d9945 100644
--- a/tools/package/maven-plugin/pom.xml
+++ b/tools/package/maven-plugin/pom.xml
@@ -25,7 +25,7 @@
 
     <groupId>org.onosproject</groupId>
     <artifactId>onos-maven-plugin</artifactId>
-    <version>1.7-SNAPSHOT</version>
+    <version>1.7</version>
     <packaging>maven-plugin</packaging>
 
     <description>Maven plugin for packaging ONOS applications or generating