ctdb-packaging: Fix systemd network dependency

https://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/ says:

  network.target has very little meaning during start-up. [...]
  Whether any network interfaces are already configured when it is
  reached is undefined. [...]

  network-online.target is a target that actively waits until the
  ne[t]work is "up",

CTDB expects to be able to bind a socket to a node address and expects
interfaces for public IP addresses to exist.  CTDB also doesn't expect
time to jump, so also wait until time is synchronised.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12255

Signed-off-by: Martin Schwenke <[email protected]>
Reviewed-by: Steve French <[email protected]>
Reviewed-by: Amitay Isaacs <[email protected]>
Tested-by: Steve French <[email protected]>

ctdb/config/ctdb.service

@@ -1,6 +1,6 @@
 [Unit]
 Description=CTDB
-After=network.target
+After=network-online.target time-sync.target
 
 [Service]
 Type=forking