bots: make command_prefix configurable

roles/matrix-bridge-mautrix-hangouts/defaults/main.yml

@@ -24,6 +24,8 @@ matrix_mautrix_hangouts_homeserver_address: "{{ matrix_homeserver_container_url
 matrix_mautrix_hangouts_homeserver_domain: '{{ matrix_domain }}'
 matrix_mautrix_hangouts_appservice_address: 'http://matrix-mautrix-hangouts:8080'
 
+matrix_mautrix_hangouts_command_prefix: "!HO"
+
 # Controls whether the matrix-mautrix-hangouts container exposes its HTTP port (tcp/8080 in the container).
 #
 # Takes an "<ip>:<port>" or "<port>" value (e.g. "127.0.0.1:9007"), or empty string to not expose.

roles/matrix-bridge-mautrix-hangouts/templates/config.yaml.j2

@@ -62,7 +62,7 @@ bridge:
     - name
 
     # The prefix for commands. Only required in non-management rooms.
-    command_prefix: "!HO"
+    command_prefix: "{{ matrix_mautrix_hangouts_command_prefix }}"
 
     # Number of chats to sync (and create portals for) on startup/login.
     # Maximum 20, set 0 to disable automatic syncing.