Refactored OpenstackSwitching app

[DONE]
- Restructured to activate or deactivate switching and routing app separately
- Fixed to add or remove host when port is detected or vanished
- Use openstack node service to get integration bridges and data IP

[TODO]
- Remove use of OpenstackPortInfo
- Support installing flow rules for exising VMs
- Call security group update method when port update triggered from OpenStack

Change-Id: Ic0b2ac3f7ab07f0e20c97c6edfdd1928b9767baf
diff --git a/apps/openstacknode/pom.xml b/apps/openstacknode/pom.xml
index 5524b22..71cb5b2 100644
--- a/apps/openstacknode/pom.xml
+++ b/apps/openstacknode/pom.xml
@@ -38,7 +38,8 @@
         <onos.app.url>http://onosproject.org</onos.app.url>
         <onos.app.readme>SONA Openstack Node Bootstrap Application</onos.app.readme>
         <onos.app.requires>
-            org.onosproject.ovsdb-base
+            org.onosproject.ovsdb-base,
+            org.onosproject.drivers.ovsdb
         </onos.app.requires>
     </properties>