Implement security group manager, codec and watcher with unit tests

Change-Id: Ib2201d140b9dcb2eff453f13447113bdba66babd
diff --git a/apps/kubevirt-networking/api/src/main/java/org/onosproject/kubevirtnetworking/api/Constants.java b/apps/kubevirt-networking/api/src/main/java/org/onosproject/kubevirtnetworking/api/Constants.java
index 0c97fb6..81fd064 100644
--- a/apps/kubevirt-networking/api/src/main/java/org/onosproject/kubevirtnetworking/api/Constants.java
+++ b/apps/kubevirt-networking/api/src/main/java/org/onosproject/kubevirtnetworking/api/Constants.java
@@ -88,6 +88,7 @@
     public static final int CLI_LABELS_LENGTH = 30;
     public static final int CLI_CONTAINERS_LENGTH = 30;
     public static final int CLI_FLAG_LENGTH = 10;
+    public static final int CLI_NUMBER_LENGTH = 10;
     public static final int CLI_MARGIN_LENGTH = 2;
 
     public static final int PRIORITY_STATEFUL_SNAT_RULE = 40500;