Adds a CLI to show/clear cached openstack states with neutron DB

Change-Id: I270c27affc669d10236ce94ec7a546a4f85aea88
diff --git a/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/Constants.java b/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/Constants.java
index 4110ac8..4410d70 100644
--- a/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/Constants.java
+++ b/apps/openstacknetworking/api/src/main/java/org/onosproject/openstacknetworking/api/Constants.java
@@ -147,4 +147,12 @@
 
     public static final boolean DEFAULT_HA_STATUS = false;
     public static final IpAddress DEFAULT_ACTIVE_IP_ADDRESS = IpAddress.valueOf("127.0.0.1");
+
+    public static final String SECURITY_GROUP_FORMAT = "%-40s%-20s";
+    public static final String NETWORK_FORMAT = "%-40s%-20s%-20s%-8s";
+    public static final String SUBNET_FORMAT = "%-40s%-20s%-20s";
+    public static final String ROUTER_INTF_FORMAT = "%-40s%-20s%-20s";
+    public static final String PORT_FORMAT = "%-40s%-20s%-20s%-8s";
+    public static final String ROUTER_FORMAT = "%-40s%-20s%-20s%-8s";
+    public static final String FLOATING_IP_FORMAT = "%-40s%-20s%-20s";
 }