[MapProxy] Restart multiple times at startup

[Alfonso Martínez Cuadrado]

Hi,

When executing the mapproxy-util serve-develop {conf-file}.yaml command, 
the service is restarted one or more times, so the configuration file is 
read at least twice. Therefore the service startup time is increased.

I have posted an issue with more details: 
https://github.com/mapproxy/mapproxy/issues/915

Any help will be appreciated.

Thanks,

Alfonso