until now, we manually polled the systemd service state during a reload
so that the sd_notify messages get processed in the correct order
(RELOAD(old) -> MAINPID(old) -> READY(new))
with systemd >= 246 there is now 'sd_notify_barrier' which
blocks until systemd processed all prior messages
with that change, the daemon does not need to know the service name anymore
Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>
Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>
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