systemd.bbclass: update command to check systemctl available

When use a core image with systemd as docker image, it fails to
install/remove package which calls systemctl in post scripts.
It fails to run systemctl in a container:

bash-5.0# systemctl
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down

So replace the criterion command 'type systemctl' with 'systemctl' in
package post scripts to check whether systemctl available.

Signed-off-by: Kai Kang <kai.kang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

0 files changed, 0 insertions, 0 deletions