NetTestCommand: Removing a forgotten debug print

I accidentally left two debug print messages in the NetTestCommand
class in one of the series I posted earlier. This patch just removes
them.

Signed-off-by: Radek Pazdera <rpazdera@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
colours: Fixing multiple bugs with colours

The default values written to the config were wrong and made the
controller crash on the next invocation.

Another problem was in lnst-slave. The slave script didn't load the
colour configuration from the conf file properly.

Both of them should be fixed now.

Signed-off-by: Radek Pazdera <rpazdera@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>