try and fix mdapi01.stg trying to start/restart apache when it does not need it at all

inventory/group_vars/all

@@ -186,3 +186,9 @@ openshift_required_images:
 # docker images required by OSBS for builds
 fedora_required_images:
   - "fedora:24"
+
+#
+# say if we want the apache role dependency for mod_wsgi or not
+# In some cases we want mod_wsgi and no apache (for python3 httpaio stuff)
+#
+wsgi_wants_apache: true

inventory/group_vars/mdapi-stg

@@ -27,3 +27,7 @@ fedmsg_certs:
   can_send:
   - mdapi.repo.update
 
+#
+# We do not want apache here, in this case we only want mod_wsgi
+#
+wsgi_wants_apache: false

roles/mod_wsgi/meta/main.yml

@@ -1,2 +1,3 @@
 dependencies:
 - role: apache
+  when: wsi_wants_apache is true