Adapt to systemd 240 not sending bind/unbind uevents
Systemd 240 changed its behaviour and does NOT send uevents anymore (commit 56c88). This breaks detection of force-power support (and therefore also the unit test).
Systemd 240 changed its behaviour and does NOT send uevents anymore (commit 56c88). This breaks detection of force-power support (and therefore also the unit test).