[ONOS-7863] Initial support GENEVE tunnel at SONA

Change-Id: Ia85d32e8068c22d59082dceccc0d911f8acb5f02
diff --git a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackNetworkManager.java b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackNetworkManager.java
index 98bd413..e5301e5 100644
--- a/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackNetworkManager.java
+++ b/apps/openstacknetworking/app/src/main/java/org/onosproject/openstacknetworking/impl/OpenstackNetworkManager.java
@@ -434,26 +434,31 @@
         Set<String> networkIds = Sets.newConcurrentHashSet();
 
         switch (type.toUpperCase()) {
-            case "FLAT" :
+            case Constants.FLAT :
                 networkIds = augmentedNetworkMap.asJavaMap().entrySet().stream()
                         .filter(e -> e.getValue().type() == FLAT)
                         .map(Map.Entry::getKey).collect(Collectors.toSet());
                 break;
-            case "VXLAN" :
+            case Constants.VXLAN :
                 networkIds = augmentedNetworkMap.asJavaMap().entrySet().stream()
-                        .filter(e -> e.getValue().type() == Type.VXLAN)
+                        .filter(e -> e.getValue().type() == VXLAN)
                         .map(Map.Entry::getKey).collect(Collectors.toSet());
                 break;
-            case "GRE" :
+            case Constants.GRE :
                 networkIds = augmentedNetworkMap.asJavaMap().entrySet().stream()
-                        .filter(e -> e.getValue().type() == Type.GRE)
+                        .filter(e -> e.getValue().type() == GRE)
                         .map(Map.Entry::getKey).collect(Collectors.toSet());
                 break;
-            case "VLAN" :
+            case Constants.VLAN :
                 networkIds = augmentedNetworkMap.asJavaMap().entrySet().stream()
                         .filter(e -> e.getValue().type() == VLAN)
                         .map(Map.Entry::getKey).collect(Collectors.toSet());
                 break;
+            case Constants.GENEVE :
+                networkIds = augmentedNetworkMap.asJavaMap().entrySet().stream()
+                        .filter(e -> e.getValue().type() == GENEVE)
+                        .map(Map.Entry::getKey).collect(Collectors.toSet());
+                break;
             default:
                 break;
         }