exceptions: use mix of logconfig/info/warning

exceptions: use mix of logconfig/info/warning

Use a mix of SCLogConfig, Warning and Info.
This mix works as follows: when something unnexpected for the user
happens - for instance, the engine ignoring an invalid config value, we
use warning. For indicating the value for the master switch, which
happens only once, we use Info. For all the other cases, we use
SCLogConfig.

It is possible that SCLogConfig isn't showing at the moment, this is a
possible bug to investigate further.

Related to
Bug #5825