Definition: The time to fully sync out a new release from beginning (branch cut) to end. IOW: The process where we take what is in master for MW Core and extensions, make a release of that, and push it out to the testwikis. Time from saying "OK, gotime" to Special:Version showing the update.
Purpose: reducing the time to push out new releases means we can push out new/bug fix releases more often
INFO: Separate out into buckets the full scap from other sync-* or non-l10n scap deploys.