Reload nginx during syncs
Reload nginx during syncs

Instead of stopping nginx during a sync of repository files, temporarily
disable the openstack-slushee site. This friendlier behavior will allow
for the repo server to share a web server with other sites and services.

Change-Id: I95cbd104d948f51cbff6a8396d1ba115ad99d7c6

openstack/openstack-ansible-repo_server,openstack/openstack-ansible-repo_server