Rename horizon settings filenames

The purpose of this patch is to make it easier to
review changes, because renaming and changing the
file in one patch will generate diff when the entire
file will be deleted on the one hand and new file
(actually just renamed) will be new on the other hand,
which is hard to review.

Change-Id: I17a16ce746faa8898a457cadbb6f996f964a5b6f

ansible/roles/horizon/tasks/config.yml

@@ -83,12 +83,12 @@
     horizon: "{{ horizon_services['horizon'] }}"
   template:
     src: "{{ item }}"
-    dest: "{{ node_config_directory }}/horizon/local_settings"
+    dest: "{{ node_config_directory }}/horizon/_9998-kolla-settings.py"
     mode: "0660"
   with_first_found:
-    - "{{ node_custom_config }}/horizon/{{ inventory_hostname }}/local_settings"
-    - "{{ node_custom_config }}/horizon/local_settings"
-    - "local_settings.j2"
+    - "{{ node_custom_config }}/horizon/{{ inventory_hostname }}/_9998-kolla-settings.py"
+    - "{{ node_custom_config }}/horizon/_9998-kolla-settings.py"
+    - "_9998-kolla-settings.py.j2"
   when:
     - horizon.enabled | bool
     - inventory_hostname in groups[horizon.group]
@@ -101,12 +101,12 @@
     horizon: "{{ horizon_services['horizon'] }}"
   template:
     src: "{{ item }}"
-    dest: "{{ node_config_directory }}/horizon/custom_local_settings"
+    dest: "{{ node_config_directory }}/horizon/_9999-custom-settings.py"
     mode: "0660"
   with_first_found:
-    - "{{ node_custom_config }}/horizon/{{ inventory_hostname }}/custom_local_settings"
-    - "{{ node_custom_config }}/horizon/custom_local_settings"
-    - "custom_local_settings.j2"
+    - "{{ node_custom_config }}/horizon/{{ inventory_hostname }}/_9999-custom-settings.py"
+    - "{{ node_custom_config }}/horizon/_9999-custom-settings.py"
+    - "_9999-custom-settings.py.j2"
   when:
     - horizon.enabled | bool
     - inventory_hostname in groups[horizon.group]