Use the pbr generated wsgi binary file located in binary folder

Since pbr 1.4.0, wsgi_scripts entrypoing is supported and it will
generated a wsgi compatible binary file.

Change-Id: I4192258226ec94b667913fd6fe099c4923145ea7

ansible/roles/cloudkitty/templates/wsgi-cloudkitty.conf.j2

 {% set python_path = '/usr/lib/python2.7/site-packages' if kolla_install_type == 'binary' else '/var/lib/kolla/venv/lib/python2.7/site-packages' %}
+{% set binary_path = '/usr/bin' if kolla_install_type == 'binary' else '/var/lib/kolla/venv/bin' %}
 Listen {{ api_interface_address }}:{{ cloudkitty_api_port }}
 
 ServerSignature Off
@@ -13,10 +14,12 @@ TraceEnable off
   WSGIApplicationGroup %{GLOBAL}
   WSGIDaemonProcess cloudkitty group=cloudkitty processes={{ openstack_service_workers }} threads=1 user=cloudkitty python-path={{ python_path }}
   WSGIProcessGroup cloudkitty
-  WSGIScriptAlias / "{{ python_path }}/cloudkitty/api/app.wsgi"
+  WSGIScriptAlias / "{{ binary_path }}/cloudkitty-api"
 
-  <Directory "{{ python_path }}/cloudkitty/api">
-        Require all granted
+  <Directory "{{ binary_path }}">
+       <FilesMatch "^cloudkitty-api$">
+            Require all granted
+       </FilesMatch>
   </Directory>
 
 </VirtualHost>