added vars for bot token in telegram bridge

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

@@ -14,6 +14,7 @@ matrix_mautrix_telegram_data_path: "{{ matrix_mautrix_telegram_base_path }}/data
 # Get your own API keys at https://my.telegram.org/apps
 matrix_mautrix_telegram_api_id: ''
 matrix_mautrix_telegram_api_hash: ''
+matrix_mautrix_telegram_bot_token: disabled
 
 # Mautrix telegram public endpoint to log in to telegram
 # Use an uuid so it's not easily discoverable.
@@ -297,7 +298,7 @@ matrix_mautrix_telegram_configuration_yaml: |
       api_id: {{ matrix_mautrix_telegram_api_id }}
       api_hash: {{ matrix_mautrix_telegram_api_hash }}
       # (Optional) Create your own bot at https://t.me/BotFather
-      bot_token: disabled
+      bot_token: {{ matrix_mautrix_telegram_bot_token }}
 
       # Telethon connection options.
       connection: