ONOS-5970 Added CLIs to purge and sync network states from Neutron

Change-Id: Icd1f4c174de20e261229f30ddfd6857c26cb038c
diff --git a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackNetworkManager.java b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackNetworkManager.java
index b486090..3add240 100644
--- a/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackNetworkManager.java
+++ b/apps/openstacknetworking/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackNetworkManager.java
@@ -208,6 +208,11 @@
     }
 
     @Override
+    public void clear() {
+        osNetworkStore.clear();
+    }
+
+    @Override
     public Network network(String netId) {
         checkArgument(!Strings.isNullOrEmpty(netId), ERR_NULL_NETWORK_ID);
         return osNetworkStore.network(netId);