Make postgresql cluster aware

defaults/main.yml

 ---
-# defaults file for limesurvey
+limesurvey_pgdb_port: 5432

tasks/main.yml

@@ -6,7 +6,7 @@
     db_user:
       name: "{{ limesurvey_pgdb_user }}"
       password: "{{ limesurvey_pgdb_pass }}"
-    db_host: "{{ limesurvey_pgdb_host }}"
+    postgres_on_cluster: true
 
 - name: Create limesurvey directory
   ansible.builtin.file:

templates/limesurvey.env.j2

 DB_TYPE=pgsql
-DB_HOST={{ hostvars[limesurvey_pgdb_host]['ansible_default_ipv4']['address'] }}
-DB_PORT=5432
+DB_HOST={{ hostvars[limesurvey_pgdb_host]['ansible_default_ipv4']['address'] | default(limesurvey_pgdb_host) }}
+DB_PORT={{ limesurvey_pgdb_port }}
 DB_NAME={{ limesurvey_pgdb_user }}
 DB_USERNAME={{ limesurvey_pgdb_user }}
 DB_PASSWORD={{ limesurvey_pgdb_pass }}