Update configuration examples.

Author: brocaar

packaging/vendor/dragino/mips_24kc/files/chirpstack-mqtt-forwarder.toml

@@ -12,9 +12,7 @@
     udp_bind="0.0.0.0:1700"
 
 [mqtt]
-  event_topic="eu868/gateway/{{ gateway_id }}/event/{{ event }}"
-  command_topic="eu868/gateway/{{ gateway_id }}/command/{{ command }}"
-  state_topic="eu868/gateway/{{ gateway_id }}/state/{{ state }}"
+  topic_prefix="eu868"
   server="tcp://127.0.0.1:1883"
   username=""
   password=""

packaging/vendor/kerlink/klkgw/files/chirpstack-mqtt-forwarder.toml

@@ -16,15 +16,13 @@
 
   [backend.concentratord]
     event_url="ipc:///tmp/concentratord_event" 
-	command_url="ipc:///tmp/concentratord_command"
+    command_url="ipc:///tmp/concentratord_command"
 
   [backend.semtech_udp]
     bind="0.0.0.0:1700"
 
 [mqtt]
-  event_topic="eu868/gateway/{{ gateway_id }}/event/{{ event }}"
-  command_topic="eu868/gateway/{{ gateway_id }}/command/{{ command }}"
-  state_topic="eu868/gateway/{{ gateway_id }}/state/{{ state }}"
+  topic_prefix="eu868"
   server="tcp://127.0.0.1:1883"
   username=""
   password=""

packaging/vendor/multitech/conduit/files/ap1/chirpstack-mqtt-forwarder.toml

@@ -22,9 +22,7 @@
     bind="0.0.0.0:1700"
 
 [mqtt]
-  event_topic="eu868/gateway/{{ gateway_id }}/event/{{ event }}"
-  command_topic="eu868/gateway/{{ gateway_id }}/command/{{ command }}"
-  state_topic="eu868/gateway/{{ gateway_id }}/state/{{ state }}"
+  topic_prefix="eu868"
   server="tcp://localhost:1883"
   username=""
   password=""

packaging/vendor/multitech/conduit/files/ap2/chirpstack-mqtt-forwarder.toml

@@ -22,9 +22,7 @@
     bind="0.0.0.0:1700"
 
 [mqtt]
-  event_topic="eu868/gateway/{{ gateway_id }}/event/{{ event }}"
-  command_topic="eu868/gateway/{{ gateway_id }}/command/{{ command }}"
-  state_topic="eu868/gateway/{{ gateway_id }}/state/{{ state }}"
+  topic_prefix="eu868"
   server="tcp://localhost:1883"
   username=""
   password=""

packaging/vendor/multitech/conduit_ap/files/chirpstack-mqtt-forwarder.toml

@@ -22,9 +22,7 @@
     bind="0.0.0.0:1700"
 
 [mqtt]
-  event_topic="eu868/gateway/{{ gateway_id }}/event/{{ event }}"
-  command_topic="eu868/gateway/{{ gateway_id }}/command/{{ command }}"
-  state_topic="eu868/gateway/{{ gateway_id }}/state/{{ state }}"
+  topic_prefix="eu868"
   server="tcp://127.0.0.1:1883"
   username=""
   password=""