WX-1595 Add more cases to GCPBatch backend

[aednichols]

Description

The Batch integration test suite runs with the Local and GCPBatch backends. This means that any cases tagged Local would have been picked up and (perhaps counterintuitively) run on the GCPBatch backend, because that's the default.

We do have some extra cases that are not compatible with the Local backend for whatever reason, and weren't running on Batch. There's a good chance that many of them do work/should work on Batch, since it's similar to PAPI in a way that Local is not.

Release Notes Confirmation

CHANGELOG.md

• I updated CHANGELOG.md in this PR
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Terra Release Notes

• I added a suggested release notes entry in this Jira ticket
• I assert that this change doesn't need Jira release notes because it doesn't impact Terra users

[aednichols]

I don't think this is working right... the tests that have [GCPBatch, Papiv2] are skipped on Batch because the default test format is "all" (Cromwell must support all backends listed).

[aednichols]

Replaced with later work by @mcovarr