Code review comment for lp:~psivaa/cupstream2distro-config/coverage-for-thumbnail

This needs to be updated after the merge of the vivid -> wily transition. The .cfg files that need to be updated are:

 - stacks/dev/services.cfg
 - stacks/vivid/services.cfg
 - stacks/head/services.cfg

I've also listed the additional coverage hooks that need to be added below (sadly there isn't just 1 coverage hook that can be added). This hooks listed are the ones that typically work for other projects.