Original implementation was defining it globally, and applying it on the
first repository list entry.

between to test suite launch, it is not needed to keep
supervidor running. This allows to save memory usage

This will allows to use it for several different external method
calls

As zabbix agentd cannot run in foreground mode wrap it in simple foreground
application which sends singals whenever it is requested to be killed.

Instantiation shall depend on minimal tools, like system administrator would.