the session scope can be arranged freely in slices and we don't have
make assumptions about their slice anymore.
-* when detecting kdbus support in busname.c make sure to check kdbus kernel ioctl version
-
* journalctl: -m should access container journals directly by enumerating them via machined, and also watch containers coming and going. Benefit: nspawn --ephemeral would start working nicely with the journal.
* nspawn: don't copy /etc/resolv.conf from host into container unless we are in shared-network mode