Configuration File parser

[fraPace]

I found a small problem when parsing the configuration file for Zoe.

When the value for a key is left blank, the parser will take the "=" as value.

This means that:
overlay-network-name =
is translated into
overlay-network-name:=
instead of
overlay-network-name:

When removing the "=" from the configuration file, the value for that key is True

[dvenza]

According to the configargparse parser documentation this is the expected behavior. I concur that it is a bit strange, but we will not fix it.