[AJ-522] add support for empty outputs in orch passthrough

[jordansafer]

Add the new ignoreEmptyOutputs optional param to the orch passthrough API for creating submissions. This defaults to false, matching the Rawls swagger definition.

Have you read CONTRIBUTING.md lately? If not, do that first.

I, the developer opening this PR, do solemnly pinky swear that:

• I've followed the instructions if I've made any changes to the API, especially if they're breaking changes
• I've updated the RC_XXX release ticket with any manual steps required to release this change
• I've updated the FISMA documentation if I've made any security-related changes, including auth, encryption, or auditing

In all cases:

• Get two thumbsworth of review and PO signoff if necessary
• Verify all tests go green
• Squash and merge; you can delete your branch after this unless it's for a hotfix. In that case, don't delete it!
• Test this change deployed correctly and works on dev environment after deployment

[codecov]

Codecov Report

All modified lines are covered by tests ✅

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