Add ServerName to apache vhost
Add ServerName to apache vhost

Change-Id: I8f52bab84dd7ab5713d31e5df6e9a389532a5af2

open-switch/infra_puppet-gerrit,dhiana/puppet-gerrit,dhiana/puppet-gerrit,dhiana/puppet-gerrit,open-switch/infra_puppet-gerrit,open-switch/infra_puppet-gerrit