Updating onos-maven-plugin to use localRepository from Maven
rather than explicit path

Also, updating root pom.xml to point to the version and
temporarily build the plugin

Change-Id: I1a6cdaf3d384dff77cd9b4566a8c46707b789308
diff --git a/pom.xml b/pom.xml
index d56333d..0349386 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,6 +39,7 @@
     <description>Open Network Operating System root project</description>
 
     <modules>
+        <module>tools/package/maven-plugin</module>
         <module>utils</module>
         <module>core</module>
         <module>web</module>
@@ -578,7 +579,7 @@
                 <plugin>
                     <groupId>org.onosproject</groupId>
                     <artifactId>onos-maven-plugin</artifactId>
-                    <version>1.3</version>
+                    <version>1.4-SNAPSHOT</version>
                     <executions>
                         <execution>
                             <id>cfg</id>