Rewrite systemd unit for hostapd

fixes: #2

salt/states/hostapd/files/hostapd.service.jinja

@@ -0,0 +1,11 @@
+[Unit]
+Description=Hostapd IEEE 802.11 AP, IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator
+BindsTo=sys-subsystem-net-devices-{{ pillar['network']['wireless'] }}.device
+After=sys-subsystem-net-devices-{{ pillar['network']['wireless'] }}.device
+
+[Service]
+ExecStart=/usr/sbin/hostapd /etc/hostapd.conf 
+ExecReload=/bin/kill -HUP $MAINPID
+
+[Install]
+WantedBy=multi-user.target

salt/states/hostapd/init.sls

@@ -28,6 +28,21 @@ Configure hostapd:
     - group: root
     - mode: "0600"
 
+Create hostapd service unit file:
+  file.managed:
+    - name: /etc/systemd/system/hostapd.service
+    - source: salt://hostapd/files/hostapd.service.jinja
+    - template: jinja
+    - user: root
+    - group: root
+    - mode: "0644"
+
+Reload systemd daemon:
+  cmd.run:
+    - name: systemctl daemon-reload
+    - onchanges:
+      - file: Create hostapd service unit file
+
 Start hostapd:
   service.running:
     - name: hostapd