Switch labs instances to use the mysql module.

Change-Id: I2ffa43e696b6ed4dd642ac298849e306f4a250ef
Include php5-cli in mediawiki_singlenode.

This must've been pulled in by a different package, previously.

Change-Id: I7d8ad1bcfff9ebd1b4bc3295e2e3c325290e99ae
Merge "Switch labs instances to use the mysql module." into production
Merge "Include php5-cli in mediawiki_singlenode." into production