Merge "Feature 1417: support of PDUs in a VNF"

diff --cc models/yang/vnfd-base.yang
index acb5b28,1407016..cd2061b
--- 1/models/yang/vnfd-base.yang
--- 2/models/yang/vnfd-base.yang
+++ b/models/yang/vnfd-base.yang
@@@ -62,9 -62,8 +62,9 @@@ module vnfd-bas
      }
  
      leaf port-security-enabled {
-       description "Enables the port security for the port";
+       description "Enables the port security for the port.";
        type boolean;
 +      default true;
      }
    }