Cause: By default the IPA web UI adds a redirect from the web root to /ipa/up.
Consequence: This makes it appear that no other web resources may be used.
Fix: At install time the option --no-ui-redirect can be used to disable the default Rewrite rule. This may also be commented out manually in /etc/httpd/conf.d/ipa-rewrite.conf.
Result: The web server root can point wherever the customer would like. /ipa needs to remain available to IPA though.