Rename tag and priority to compute_tag and compute_priority

[bennybp]

Description

Renames tag and priority to compute_tag and compute_priority.

When dealing with datasets, tag is ambiguous - before this PR, datasets had a tagline, tags, and default_tag, where default_tag was something completely different from tags. This renames that to default_compute_tag

Also, priority can be difficult for new users to understand, so that is renamed to compute_priority (and default_compute_priority for datasets).

This also renames some function arguments and class attributes in managers. queue_tags in the config are now compute_tags to be consistent.

This changes quite a bit of code, but is fairly straightforward.

These changes are backwards compatible. Barring any bugs, old code (including currently-running managers) should continue to work. Old manager configs should also keep working.

Status

• Code base linted
• Ready to go