Deprecate using intree nova placement wsgi template

All openstack services uses 99% persent same wsgi apache config.
This patch adds functionality to configure nova-placement wsgi conf
from apache pillar. To do this on cluster level the following file
should be included:
 - system.apache.server.site.nova-placement

The intree wsgi template will be removed when we switch all model
and cookiecutter to use apache template.

Change-Id: Id6ec48ffa93db572d6a2a8257946a4a1d2fbedb3
diff --git a/tests/pillar/control_single.sls b/tests/pillar/control_single.sls
index da4cd10..3b36463 100644
--- a/tests/pillar/control_single.sls
+++ b/tests/pillar/control_single.sls
@@ -2,7 +2,7 @@
   controller:
     enabled: true
     networking: contrail
-    version: liberty
+    version: pike
     security_group: false
     vncproxy_url: 127.0.0.1
     vnc_keymap: en-gb
@@ -69,3 +69,18 @@
       'context_is_admin': 'role:admin or role:administrator'
       'compute:create': 'rule:admin_or_owner'
       'compute:create:attach_network':
+apache:
+  server:
+    enabled: true
+    default_mpm: event
+    mpm:
+      prefork:
+        enabled: true
+        servers:
+          start: 5
+          spare:
+            min: 2
+            max: 10
+        max_requests: 0
+        max_clients: 20
+        limit: 20