add mqtt bridge support

src/modules/openmower/filesystem/root/boot/openmower/mqtt/_configuration.example

@@ -0,0 +1,22 @@
+#####################################################
+### example config to forward mqtt to another broker
+#####################################################
+###
+### copy this file to another one ending with .conf
+###
+###    to enable/disable the service execute:
+### sudo systemctl  enable --now openmower-mqtt-bridge
+### sudo systemctl disable --now openmower-mqtt-bridge
+###
+
+connection bridge-to-external-broker
+
+try_private true
+cleansession true
+topic # out 0 "" openmower/
+topic openmower/# in 0
+
+address 192.168.XXX.XXX
+
+#remote_username user
+#remote_password pass

src/modules/openmower/filesystem/root/boot/openmower/mqtt/mqtt-bridge.conf

@@ -0,0 +1,11 @@
+connection bridge-to-external-broker
+
+try_private true
+cleansession true
+topic # out 0 "" openmower/
+topic # in 0 "" openmower/
+
+address 192.168.XXX.XXX
+
+#remote_username user
+#remote_password pass

src/modules/openmower/filesystem/root/etc/mosquitto/mosquitto-openmower.conf

@@ -0,0 +1,21 @@
+# A full description of the configuration file is at
+# /usr/share/doc/mosquitto/examples/mosquitto.conf.example
+
+pid_file /run/mosquitto/openmower-mqtt-bridge.pid
+log_type notice
+
+#some random port
+listener 18838
+
+
+#the bridge to the openmower container
+connection bridge-to-openmower
+
+try_private true
+cleansession true
+topic # out 0
+topic # in 0
+address localhost
+
+#include the config for the external bridge
+include_dir /boot/openmower/mqtt

src/modules/openmower/filesystem/root/etc/systemd/system/openmower-mqtt-bridge.service

@@ -0,0 +1,21 @@
+[Unit]
+Description=OpenMower MQTT Bridge
+Documentation=man:mosquitto.conf(5) man:mosquitto(8)
+After=network.target openmower.service openmower-debug.service
+Wants=network.target
+StartLimitBurst=0
+
+[Service]
+Type=notify
+NotifyAccess=main
+ExecStart=/usr/sbin/mosquitto -c /etc/mosquitto/mosquitto-openmower.conf
+ExecReload=/bin/kill -HUP $MAINPID
+Restart=on-failure
+RestartSec=10s
+ExecStartPre=/bin/mkdir -m 740 -p /var/log/mosquitto
+ExecStartPre=/bin/chown mosquitto /var/log/mosquitto
+ExecStartPre=/bin/mkdir -m 740 -p /run/mosquitto
+ExecStartPre=/bin/chown mosquitto /run/mosquitto
+
+[Install]
+WantedBy=multi-user.target

src/modules/openmower/start_chroot_script

@@ -45,6 +45,10 @@ systemctl disable podman.socket
 echo_green "Disabling podman auto update..."
 systemctl disable podman-auto-update.timer podman-auto-update.service 
 
+echo_green "Installing mosquitto and masking the normal mosquitto.service..."
+apt-get install -y mosquitto
+systemctl_if_exists mask mosquitto.service
+systemctl disable openmower-mqtt-bridge.service
 
 
 #cleanup