Update to Python UART Gateway Script

[Phil]

Hi all,

Welcome to the list!

I've just pushed a small change to the Python UART Gateway script, this strips null bytes from the UART input, and avoids the fatal 'DB Query Error' messages intermittently seen on ukhas.net upload attempts.

- params = {'origin': gateway_callsign, 'data': line}
+ params = {'origin': gateway_callsign, 'data': line.replace('\x00', '')}

( https://github.com/UKHASnet/Gateway-Upload/commit/7465c16a8f5f79efc8888af21bb50dda5d3cf32b )

Regards,

Phil