VLANRange should be required for RedundantPort obj

[Roman Dodin]

RedundantPort obj does not qualify VLANRange attr as required, though omitting this attr leads to an error:

                    "description": "VLAN Range specified null does not conform to a-b,c,d-f where a,b,c,d,f are integers between 0-4096.",
                    "title": "VLAN Range format specified is invalid."
    "internalErrorCode": 3315

Original POST:

[Philippe Dellaert]

Resolved in 5.0.2