fixup! postgresql: reconfigure locales before tests

postgresql/tests/test.yml

@@ -2,19 +2,29 @@
 - hosts: test-kitchen
 
   pre_tasks:
+  - name: Install locales
+    apt:
+      name: locales
+      state: installed
+    changed_when: false
+
   - name: Setting default locales
     lineinfile:
       dest: /etc/locale.gen
       line: "{{ item }}"
       create: yes
       state: present
+    changed_when: false
     with_items:
       - "en_US.UTF-8 UTF-8"
       - "fr_FR ISO-8859-1"
       - "fr_FR.UTF-8 UTF-8"
+    register: test_locales
 
   - name: Reconfigure locales
     command: /usr/sbin/locale-gen
+    changed_when: false
+    when: test_locales.changed
 
   roles:
     - role: postgresql