allow vars files to ship a default unix socket dir mode

defaults/main.yml

@@ -13,7 +13,7 @@ postgresql_group: postgres
 postgresql_unix_socket_directories:
   - /var/run/postgresql
 
-postgresql_unix_socket_directories_mode: '02755'
+# postgresql_unix_socket_directories_mode: '02775'
 
 postgresql_service_state: started
 postgresql_service_enabled: true

tasks/configure.yml

@@ -24,5 +24,7 @@
     state: directory
     owner: "{{ postgresql_user }}"
     group: "{{ postgresql_group }}"
-    mode: "{{ postgresql_unix_socket_directories_mode }}"
+    mode: "{{ postgresql_unix_socket_directories_mode
+        |default(__postgresql_unix_socket_directories_mode
+        |default('02775')) }}"
   with_items: "{{ postgresql_unix_socket_directories }}"

vars/Fedora-31.yml

@@ -9,5 +9,6 @@ __postgresql_packages:
   - postgresql-server
   - postgresql-contrib
   - postgresql-libs
+__postgresql_unix_socket_directories_mode: '0755'
 # Fedora 31 containers only have python3 by default
 postgresql_python_library: python3-psycopg2