contint: Move integration site to wikimedia.org

* Update main apache conf:
  - integration.wikimedia.org as ServerName instead of ServerAlias
  - SSL certificate for star.wikimedia instead of star.mediawiki
* Set up redirect from (http,https)://integration.mediawiki.org
* Set up redirect from http://integration.wikimedia.org

Bug: 40697
Change-Id: I531ea5bcfe31b96e3eafd47fee5080f8aaf86121
Merge "contint: Move integration site to wikimedia.org" into production