fix error "non-zero return code rc: 3" for task "check PostgreSQL is …

…started".

for postgresql_exists = 'true'

Do not treat return code 3 "pg_ctl: no server running" as an error.

P.S.
If PostgreSQL is stopped, it will be automatically started (task "Prepare PostgreSQL | start PostgreSQL").

roles/patroni/tasks/main.yml

@@ -360,6 +360,9 @@
       command: "{{ postgresql_bin_dir }}/pg_ctl status -D {{ postgresql_data_dir }}"
       register: pg_ctl_status_result
       changed_when: false
+      failed_when:
+        - pg_ctl_status_result.rc != 0
+        - pg_ctl_status_result.rc != 3
 
       # "Debian"
     - name: Prepare PostgreSQL | start PostgreSQL