[ONOS-6879] Adding Controller Metrics Application, To retrive memory, Disk and CPU usage for all controller

Change-Id: I5976f0194555c1c3c42d6b6d09c468d6dfc983ff
diff --git a/apps/pom.xml b/apps/pom.xml
index eb60235..dfdcf92 100644
--- a/apps/pom.xml
+++ b/apps/pom.xml
@@ -105,6 +105,7 @@
         <module>layout</module>
         <module>imr</module>
         <module>t3</module>
+        <module>nodemetrics</module>
     </modules>
 
     <properties>