add "connection_prefers_managed_devices" and "connection_no_managed_d…

Created by: fpokryvk

…evice" test

Add test, that managed devices have higher priority than unmanaged, and that if there is no managed device, NM picks unmanaged one and activates it.

small FIX: restart tag - fix eth range

https://bugzilla.redhat.com/show_bug.cgi?id=1639254

@Build:nm-1-14