Improved systemd scripts.

etc/aqhome-mqttlog.service

@@ -2,11 +2,15 @@
 Description=AqHome MQTT Log
 DefaultDependencies=no
 Wants=aqhome-data.service
+StartLimitIntervalSec=500
+StartLimitBurst=5
 
 [Service]
 Type=exec
 RemainAfterExit=no
 ExecStart=/usr/local/sbin/aqhome-mqttlog -p /var/run/aqhome-mqttlog.pid -T 0
+Restart=on-failure
+RestartSec=5s
 
 [Install]
 WantedBy=multi-user.target