fixed missing registration var

roles/matrix-sms-bridge/defaults/main.yml

@@ -141,3 +141,5 @@ matrix_sms_bridge_registration_yaml: |
   url: {{ matrix_sms_bridge_appservice_url }}
   sender_localpart: smsbot
   rate_limited: false
+
+matrix_sms_bridge_registration: "{{ matrix_sms_bridge_registration_yaml|from_yaml }}"