[fix] Clean systemd services install and really fix firewall

debian/postinst

@@ -4,7 +4,6 @@ set -e
 
 do_configure() {
   rm -rf /var/cache/moulinette/*
-  service yunohost-api restart
 
   if [ ! -f /etc/yunohost/installed ]; then
       bash /usr/share/yunohost/hooks/conf_regen/01-yunohost

debian/rules

@@ -5,11 +5,8 @@
 #export DH_VERBOSE=1
 
 %:
-	dh ${@} --with=python2
+	dh ${@} --with=python2,systemd
 
 override_dh_installinit:
-	dh_systemd_enable --name yunohost-api
-	dh_systemd_enable --name yunohost-firewall --no-enable
 	dh_installinit --name=yunohost-api
 	dh_installinit --name=yunohost-firewall
-	dh_systemd_start

debian/yunohost-firewall.service

@@ -9,6 +9,3 @@ ExecStart=/usr/bin/yunohost firewall reload
 ExecReload=/usr/bin/yunohost firewall reload
 ExecStop=/usr/bin/yunohost firewall stop
 RemainAfterExit=yes
-
-[Install]
-WantedBy=multi-user.target

src/yunohost/tools.py

@@ -270,12 +270,12 @@ def tools_postinstall(domain, password, ignore_dyndns=False):
     # Enable UPnP silently and reload firewall
     firewall_upnp('enable', no_refresh=True)
 
+    os.system('touch /etc/yunohost/installed')
+
     # Enable and start YunoHost firewall at boot time
     os.system('update-rc.d yunohost-firewall enable')
     os.system('service yunohost-firewall start')
 
-    os.system('touch /etc/yunohost/installed')
-
     service_regenconf(force=True)
 
     msignals.display(m18n.n('yunohost_configured'), 'success')