restore TTL for contint websites

Raise TTL from 300s to 1H for the entries:

     doc.wikimedia.org
     integration.wikimedia.org
     doc.mediawiki.org
     integration.mediawiki.org

They have been migrated successfully behind the misc varnish box.

Change-Id: Iae1cea9eea291f722ee3f431115cfc062566e3f3