deluge, mldonkey, syncthing, transmission: Depend on nslcd.service

Add nslcd.service as a dependency to the services that depend on users
and groups defined in LDAP. deluged, mldonkey-server, syncthing@syncthing
and transmission-daemon services depend on freedombox-share LDAP group.

Closes #2061

Tests done with apps deluge, mldonkey, syncthing and transmission,
in both debian stable and testing dev containers, after applying changes:
- After installing an app and after reboot, the daemon user is a member
of the freedombox-share group.
- Checked with the `systemctl show` command that nslcd.service is added to
After=... dependencies.
- All the functional tests pass (in Debian stable, closed manually
the syncthing usage reporting form - #2059).

Signed-off-by: Veiko Aasa <veiko17@disroot.org>
Reviewed-by: Sunil Mohan Adapa <sunil@medhas.org>

plinth/modules/deluge/data/lib/systemd/system/deluged.service.d/freedombox.conf

@@ -0,0 +1,3 @@
+# The service depends on users and groups defined in LDAP
+[Unit]
+After=nslcd.service

plinth/modules/mldonkey/data/lib/systemd/system/mldonkey-server.service.d/freedombox.conf

@@ -1,6 +1,6 @@
 [Unit]
 Description=MLDonkey: Multi-protocol, peer-to-peer file sharing server
-After=syslog.target network.target
+After=syslog.target network.target nslcd.service
 ConditionPathExists=/var/lib/mldonkey/downloads.ini
 Documentation=man:mlnet(1) http://mldonkey.sourceforge.net/Main_Page
 

plinth/modules/syncthing/data/lib/systemd/system/syncthing@syncthing.service.d/freedombox.conf

@@ -0,0 +1,3 @@
+# The service depends on users and groups defined in LDAP
+[Unit]
+After=nslcd.service

plinth/modules/transmission/data/lib/systemd/system/transmission-daemon.service.d/freedombox.conf

@@ -0,0 +1,3 @@
+# The service depends on users and groups defined in LDAP
+[Unit]
+After=nslcd.service