This is needed because we want to keep the nightly start times aligned with Buildbot starts, in order to keep the possibility of drastically different code going out for one platform in a day and not another (e.g. a merge). The reason the change is needed specifically is because UTC of course doesn't follow Daylight Time shifts, and Pacific time just went through one (+1 hour) which brings it closer to UTC by one hour, so in order to keep UTC matching what buildbot uses we subtract 1 hour from the UTC time.
MozReview-Commit-ID: J07lZYJxlOd
--HG--
extra : rebase_source : d5bb2283a5696fd0bc11f781bb43e294b206040e
This requires moving the schema utilities to their own util module.
MozReview-Commit-ID: KR5xSJ9ak5Y
--HG--
extra : rebase_source : 1c1f6bfb6a08deb8c0be4b2b58db02d85aafeb89
This adds `.cron.yml` and a new mach command to interpret it. While
functionality is limited to nightlies right now, there is room to expand to
more diverse periodic tasks. Let your imagination run wild!
MozReview-Commit-ID: KxQkaUbsjQs
--HG--
extra : rebase_source : ddf0a1eadae5a1169c0ead7bcb7b9ce61b255fbf
Justin Wood
Kim Moir
Madeleine Chercover
Joel Maher
Dustin J. Mitchell