meta/recipes-core/systemd/systemd-systemctl/systemctl seems to care
only about "system" units, so create an Alias link for "user" unit
manually to avoid errors which are indicated by following entries
in the systemd journal:
systemd[381]: dbus.socket: Socket service dbus.service not loaded, refusing.
systemd[381]: Failed to listen on D-Bus User Message Bus Socket.
which take place for example when DISTRO_FEATURES contains 'pam'.
Signed-off-by: Niko Mauno <niko.mauno@vaisala.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>