systemd: don't make NetworkManager D-Bus activatable

If the NetworkManager daemon has been stopped manually we don't want it
to be autostarted by a client request.

[lkundrak@v3.sk: The auto-activation is probably more surprising than useful.
Services that need NetworkManager API should depend on NetworkManager service
directly.

I have no idea what purpose does the D-Bus service file serve nowadays,
but it looks rather hacky (really, activating /bin/false) and the comment
in it suggests that the autoactivating behavior was not intended anyway.
Debian has been shipping this for quite some time and no complains have been
heard.]

https://github.com/NetworkManager/NetworkManager/pull/230

data/NetworkManager.service.in

@@ -24,7 +24,6 @@ ProtectHome=read-only
 
 [Install]
 WantedBy=multi-user.target
-Alias=dbus-org.freedesktop.NetworkManager.service
 Also=NetworkManager-dispatcher.service
 
 # We want to enable NetworkManager-wait-online.service whenever this service

data/meson.build

@@ -18,23 +18,22 @@ configure_file(
 
 if install_systemd_unit_dir
   services = [
-    ['NetworkManager-dispatcher.service', systemd_system_unit_dir],
-    ['NetworkManager.service', systemd_system_unit_dir],
-    ['org.freedesktop.NetworkManager.service', dbus_sys_dir]
+    'NetworkManager-dispatcher.service',
+    'NetworkManager.service',
   ]
 
   if have_systemd_200
-    services += [['NetworkManager-wait-online.service', systemd_system_unit_dir]]
+    services += ['NetworkManager-wait-online.service']
   else
-    services += [['NetworkManager-wait-online-systemd-pre200.service', systemd_system_unit_dir]]
+    services += ['NetworkManager-wait-online-systemd-pre200.service']
   endif
 
   foreach service: services
     configure_file(
-      input: service[0] + '.in',
-      output: service[0],
+      input: service + '.in',
+      output: service,
       install: true,
-      install_dir: service[1],
+      install_dir: systemd_system_unit_dir,
       configuration: data_conf
     )
   endforeach

data/org.freedesktop.NetworkManager.service.in

@@ -1,11 +0,0 @@
-# This D-Bus service activation file is only for systemd support since
-# an auto-activated NetworkManager would be quite surprising for those people
-# who have NM installed but turned off.  Thus the Exec path available to
-# D-Bus is /bin/false, but systemd knows the real Exec path due to the NM
-# systemd .service file.
-
-[D-BUS Service]
-Name=org.freedesktop.NetworkManager
-Exec=/bin/false
-User=root
-SystemdService=dbus-org.freedesktop.NetworkManager.service