django: take HOST from DJANGO_HOST

The base django-configmap hardcoded HOST to the yc-k8s-test domain, and every
cluster inheriting it got that value. HOST now reads DJANGO_HOST with the old
value as the default; backend in vad, uralkal and d8-ugmk-prod sets its own
public host. celery is left on the default.

apps/django/base/django-configmap.yaml

@@ -87,7 +87,7 @@ data:
         'Bearer',
     )
 
-    HOST = "https://sarex.contour.infra.sarex.tech"
+    HOST = os.environ.get("DJANGO_HOST", "https://sarex.contour.infra.sarex.tech")
 
     POSTGRES_DATABASE = os.environ.get('DJANGO_POSTGRES_DATABASE')
     POSTGRES_USER = os.environ.get('DJANGO_POSTGRES_USER')

apps/django/d8-ugmk-prod/backend.yaml

@@ -18,6 +18,9 @@ spec:
           - name: SERVER_ZITADEL_ENABLED
             value:
               _default: "True"
+          - name: DJANGO_HOST
+            value:
+              _default: "https://sarex.uralmine.com"
           - name: DJANGO_SETTINGS_MODULE
             value:
               _default: config.settings.production

apps/django/uralkal/backend.yaml

@@ -14,6 +14,10 @@ spec:
               cpu: null
               memory: null
         envs:
+          - name: DJANGO_HOST
+            value:
+              _default: "https://sarex.local.uralkali.com"
+
           - name: ALLOWED_HOSTS
             value:
               _default: "*"

apps/django/vad/backend.yaml

@@ -9,6 +9,10 @@ spec:
     services:
       backend:
         envs:
+          - name: DJANGO_HOST
+            value:
+              _default: "https://sarex.vadroad.ru"
+
           - name: ALLOWED_HOSTS
             value:
               _default: "*"