Use global wsgi subinterpreter for horizon mod_wsgi

Some cryptography is implemented in Rust and used
via PyO3 which does not support multiple subinterpreters.
See PyO3/pyo3#576

Change-Id: Iff43e99134f41b65b220765a161fdd1b94495272

horizon/Chart.yaml

@@ -14,7 +14,7 @@ apiVersion: v1
 appVersion: v1.0.0
 description: OpenStack-Helm Horizon
 name: horizon
-version: 0.3.22
+version: 0.3.23
 home: https://docs.openstack.org/horizon/latest/
 icon: https://www.openstack.org/themes/openstack/images/project-mascots/Horizon/OpenStack_Project_Horizon_vertical.png
 sources:

horizon/values.yaml

@@ -93,8 +93,9 @@ conf:
       CustomLog /dev/stdout proxy env=forwarded
 
       <VirtualHost *:{{ tuple "dashboard" "internal" "web" . | include "helm-toolkit.endpoints.endpoint_port_lookup" }}>
+          WSGIApplicationGroup %{GLOBAL}
           WSGIScriptReloading On
-          WSGIDaemonProcess horizon-http processes=5 threads=1 user=horizon group=horizon display-name=%{GROUP} python-path=/var/lib/kolla/venv/lib/python2.7/site-packages
+          WSGIDaemonProcess horizon-http processes=5 threads=1 user=horizon group=horizon display-name=%{GROUP}
           WSGIProcessGroup horizon-http
           WSGIScriptAlias / /var/www/cgi-bin/horizon/django.wsgi
           WSGIPassAuthorization On

releasenotes/notes/horizon.yaml

@@ -59,4 +59,5 @@ horizon:
   - 0.3.20 Enable custom annotations for Openstack secrets
   - 0.3.21 Update images used by default
   - 0.3.22 Align with 2024.1 requirements
+  - 0.3.23 Use global wsgi subinterpreter
 ...