If we're already running in a unit with delegation turned on, let's
skip allocation of a scope unit and cgroup subroot. This allows journald
to correctly attribute the logs of all subprocesses spawned by tests such
as test-execute to the test-execute service when the test is running in a service.
Specifically, this will make tests log to the journal if stderr is
connected to the journal. This means we get proper log priorities
and such compared to if we just logged to stderr.
These don't get pulled in automatically and there doesn't seem to
be a "system-users" package so install the ones we need for the
integration tests manually.
CentOS does not ship these sysusers dropins which set up basic system
users and groups. Until we can move to CentOS Stream 10, let's add the
dropins ourselves to make sure the base system users/groups are available
on CentOS.
The Arch Linux PKGBUILD does not (yet) have versioned dependencies
between the systemd packages, causing systemd-libs to not get updated
to 256-devel if systemd 256-devel is installed. Let's explicitly install
the newer version of systemd-libs as well for now until this problem is
fixed.
This introduces dependencies on various environment variables set
by rpmbuild which will not be set when rerunning meson inside the
VM/container so let's disable package notes to avoid these dependencies,
as the package notes aren't terribly useful in this scenario anyway.
