Add a mirror for the FC27 'updates' repo.
Just like we did for FC26, we recently added a mirror for FC27. And since its not released yet, we can't add an 'updates' mirror.
This ticket is for adding the FC27 'updates' mirror once FC27 is released.
Patch added to create the job and create a mirror. Once the job exists and the mirror is in sync we'll enable enable the mirror in data/slave-repos/fedora27.conf in a separate patch
FC27 is out, time to handle this.