add option to not add alternate name during a group rename

<WsRestGroupSaveRequest><wsGroupToSaves><WsGroupToSave><wsGroupLookup><groupName>d:newName2</groupName></wsGroupLookup><wsGroup><name>d:newName3</name></wsGroup></WsGroupToSave></wsGroupToSaves><params><WsParam><paramName>renameAssignAlternateName</paramName><paramValue>false</paramValue></WsParam></params></WsRestGroupSaveRequest>