Rework horizon role to support local_settings.d

This patch implements horizon's preferred way how
to configure itself described in docs [1],

[1] https://docs.openstack.org/horizon/latest/configuration/settings.html

Depends-On: https://review.opendev.org/c/openstack/kolla/+/906339
Change-Id: I60ab4634bf4333c47d00b12fc4ec00570062bd18

1 files changed, 2 insertions, 2 deletions

diff --git a/doc/source/reference/shared-services/horizon-guide.rst b/doc/source/reference/shared-services/horizon-guide.rst
index 2660c21fb..09a136222 100644
--- a/doc/source/reference/shared-services/horizon-guide.rst
+++ b/doc/source/reference/shared-services/horizon-guide.rst
@@ -18,7 +18,7 @@ Horizon by using a custom python settings file that will override
 the default options set on the local_settings file.
 
 As an example, for setting a different (material) theme as the default one,
-a file named custom_local_settings should be created under the directory
+a file named _9999-custom-settings.py should be created under the directory
 ``{{ node_custom_config }}/horizon/`` with the following contents:
 
 .. code-block:: python
@@ -45,7 +45,7 @@ This entry updates AVAILABLE_THEMES adding the new theme at the list end.
 
 Theme files have to be copied into:
 ``{{ node_custom_config }}/horizon/themes/my_custom_theme``.
-The new theme can be set as default in custom_local_settings:
+The new theme can be set as default in _9999-custom-settings.py:
 
 .. code-block:: python