MGS not spawning on MBT spawners

[sh4rkman]

On Gorodok_Invasion_v1 USA+Motorized WPMC, MGS seems to spawn on MBT spawners

Those spawners don't have MGS in their typePriorities :

{
  "icon": "questionmark",
  "name": "Team1SpawnerMBT1",
  "type": "Team One",
  "size": "MBT",
  "maxNum": 0,
  "typePriorities": [
    {
      "name": "MBT",
      "icon": "10"
    }
  ],
  "tagPriorities": []
}

Looks like there is a "authorizedVehicleTypes" properties in the spawners blueprint that could told us that MGS are autorized, but it's not extracted yet.