UDP does't send any data

[arjanvanb (Arjan)]

@kersing

use fake_gps and the coordinates in local_conf.json

I thought that fake_gps should (almost) never be used? At least, in May 2017 @htdvisser wrote:

@htdvisser

For the gateway:

• If the gateway has a GPS and has a GPS fix :
  • …
• In all other cases:
  • The gateway must not add a location to the status messages.
  • The gateway must not add a time field to uplink messages.

…

Note: The fake_gps option must only be used if the gateway has some other means to determine an accurate location