Fix the path of the active.standby file.

tasks/postgresql-streaming-replication.yml

@@ -111,9 +111,12 @@
 
   - name: Check if a replica is already enabled
     stat:
-      path: '{{ postgresql_active_data_dir }}/.standby.signal'
+      path: '{{ postgresql_active_data_dir }}/standby.signal'
     register: standby_signal_file
 
+  - debug:
+      msg: 'Replica file: {{ postgresql_active_data_dir }}/standby.signal'
+
   - name: Stop the postgresql service on deb systems
     service:
       name: postgresql