Add default log size limits to squid plug-in

The squid plug-in can potentially collect large volumes of logs.
Limit it to 15M to be consistent with similar modules.

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>
Add system udev rules directory to udev plug-in

Signed-off-by: Bryn M. Reeves <bmr@redhat.com>