Lps 48834

This is a fix for a regression bug caused by https://issues.liferay.com/browse/LPS-42569. 

After looking at this issue with Minhchau, we decided that a proper fix is to not use the site virtual host for server names that are listed using the `virtual.hosts.valid.hosts` portal property. These names are used for virtual hostnames for the portal and should not be redirected with the site virtual host.