tie mediawiki-core-code-coverage on gallium

I am changing the directories to belong to `jenkins-slave` user.

Change-Id: I9aec6f703c8fa1959911753596d6e1512714805e
tie integration-docroot-deploy to gallium

I am changing the directories to belong to `jenkins-slave` user.

Change-Id: Icce0761752fc63edda62b38eb85c24bca9e8f148