Added options for TLS usage for MQTT client and insecure certificate handling

tools/rpi/ahoy.yml.example

@@ -16,6 +16,8 @@ ahoy:
     port: 1883
     user: 'username'
     password: 'password'
+    useTLS: False
+    insecureTLS: False #set True for e.g. self signed certificates. 
 
   # Influx2 output
   influxdb:

tools/rpi/hoymiles/__main__.py

@@ -226,6 +226,11 @@ if __name__ == '__main__':
     mqtt_config = ahoy_config.get('mqtt', [])
     if not mqtt_config.get('disabled', False):
         mqtt_client = paho.mqtt.client.Client()
+        
+        if mqtt_config.get('useTLS',False):
+            mqtt_client.tls_set()
+            mqtt_client.tls_insecure_set(mqtt_config.get('insecureTLS',False))
+
         mqtt_client.username_pw_set(mqtt_config.get('user', None), mqtt_config.get('password', None))
         mqtt_client.connect(mqtt_config.get('host', '127.0.0.1'), mqtt_config.get('port', 1883))
         mqtt_client.loop_start()