general: add busctl_LoadConnections_relative_path
add test, that D-Bus function LoadConnections returns correct error and does not assert on relative path argument
https://bugzilla.redhat.com/show_bug.cgi?id=1704308
@Build:nm-1-18
Due to an influx of spam, we have had to impose restrictions on new accounts. Please see this wiki page for instructions on how to get full permissions. Sorry for the inconvenience.
add test, that D-Bus function LoadConnections returns correct error and does not assert on relative path argument
https://bugzilla.redhat.com/show_bug.cgi?id=1704308
@Build:nm-1-18