Default values of ticket workflow fields should be configured in the [ticket-workflow] section

[Ryan J Ollos]

The fields resolution and status in the list of Ticket.protected_fields (tags/trac-1.0.2/trac/ticket/model.py@:51-52#L49​) are only modified by the workflow. #2045 moves Trac one step closer to adding owner to Ticket.protected_fields and only allowing the workflow to change the owner field.

Having default_resolution and default_owner as attributes of a ticket workflow action and configured through the [ticket-workflow] section rather than the [ticket] section has a few advantages:

• It should be clear that these fields are controlled by the ticket workflow.
• Unique default values can be provided for each action in the workflow.

I've also found the attribute names set_owner and set_resolution to be a bit confusing. We might consider renaming these to resolutions / owners or allowed_resolutions / allowed_owners.