When running on CentOS, two problems appeared:
- when using proxy, apache was failing with an error 500,
fixed by enabling httpd_can_network_connect
- when trying to access files under a vhost, apache was
failing with Access denied because search permissions
are missing. So running chcon on the docroot for each vhost
Change-Id: I87c4c0e51f05eab8f5c8e094c2c54504e60b97af