Add entry types to Python reserved infos
Add entry types to Python reserved infos

This CL adds entry types for all reserved_infos that have a type of
GenericSet. We can make use of this information to validate diagnostics
as they are built in various places, and in particular, will use this
first to power add_reserved_diagnostics, which needs to be able to add
required fields for dashboard uploads.

BUG=catapult:#3763

Review-Url: https://codereview.chromium.org/3012533002

catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult,catapult-project/catapult