Added assembly plugin to the pom.xml so we can build a standalone jar file to run ONOS
diff --git a/pom.xml b/pom.xml
index 71e8192..41a9b14 100644
--- a/pom.xml
+++ b/pom.xml
@@ -165,6 +165,14 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+	<artifactId>maven-assembly-plugin</artifactId>
+	<configuration>
+	  <descriptorRefs>
+	    <descriptorRef>jar-with-dependencies</descriptorRef>
+	  </descriptorRefs>
+	</configuration>
+      </plugin>
     </plugins>
   </build>
   <!-- for getting visualization reporting   -->