rename mediawiki-vagrant.yaml to mediawiki-misc.yaml

We merge misc mediawiki/* repositories in the same file.

Change-Id: I0ecb6bffcd116f30555e5e96a167a7ac467c79da
mediawiki-selenium-ruby1.9.3lint

For mediawiki/selenium ruby gem.

Change-Id: I585f5846a31039ed5b22afe1629f11c855d084e8