We forgot to pass NeutronEnableTunnelling param to controllers
(passed only to computes), making it unusable.
Change-Id: I74756732deabd1c7ba9039832ea169fd322a569f
NeutronPublicInterfaceIP: {get_param: NeutronPublicInterfaceIP}
NeutronFlatNetworks: {get_param: NeutronFlatNetworks}
NeutronBridgeMappings: {get_param: NeutronBridgeMappings}
+ NeutronEnableTunnelling: {get_param: NeutronEnableTunnelling}
NeutronNetworkVLANRanges: {get_param: NeutronNetworkVLANRanges}
NeutronPublicInterface: {get_param: NeutronPublicInterface}
NeutronPublicInterfaceDefaultRoute: {get_param: NeutronPublicInterfaceDefaultRoute}