Merge pull request #8700 from keszybz/hibernation

Various improvements related to hibernation

diff --cc src/login/logind-action.c
Simple merge

diff --cc src/login/logind-action.h
Simple merge

diff --cc src/login/logind-dbus.c
Simple merge

diff --cc src/shared/bus-unit-util.c
Simple merge

diff --cc src/shared/bus-unit-util.h
Simple merge

diff --cc src/shared/sleep-config.c
Simple merge

diff --cc src/systemctl/systemctl.c
Simple merge

diff --cc src/test/test-sleep.c
Simple merge