Use apache_config module in place of symlink

Change-Id: I50fc994e776bceccf91ce639de7af0e902c7bc78
diff --git a/horizon/server/service.sls b/horizon/server/service.sls
index 344a095..86f0c21 100644
--- a/horizon/server/service.sls
+++ b/horizon/server/service.sls
@@ -49,13 +49,16 @@
     - pkg: horizon_packages
 
 {%- if grains.os_family == 'Debian' %}
-/etc/apache2/conf-enabled/openstack-dashboard.conf:
-  file.symlink:
-    - target: /etc/apache2/conf-available/openstack-dashboard.conf
-
 apache_enable_wsgi:
   apache_module.enable:
     - name: wsgi
+
+enable_horizon_apache_config:
+  apache_conf.enable:
+  - name: openstack-dashboard
+  - require:
+    - file: horizon_apache_config
+    - apache_module: apache_enable_wsgi
 {%- endif %}
 
 horizon_services: