How can I proxy without context path?

Question

I have been using apache/sonar like this.

<Proxy http://localhost:7070/sonar*>
          Order deny,allow
          Allow from all
</Proxy>
ProxyPass               /sonar  http://localhost:7070/sonar nocanon
ProxyPassReverse        /sonar  http://localhost:7070/sonar
ProxyPassReverse        /sonar  http://mycompany.com/sonar

I've been able to serve it via http://mycompany.com/sonar.

SonarQube 5.4 Dropped the ability to customize the web app context.

The option http://sonar.mycompany.com is not available on me. How can I make this work?