DEVEX-138 Add an integration test for dx download within inaccessible project
DEVEX-138 Add an integration test for dx download within inaccessible project

Summary:
The integration test for dx download executed from a project
the user had lost access to.

Test Plan: this test passed in jenkins dxpy-branch-integration-tests-on-staging

Reviewers: sking

Reviewed By: sking

Differential Revision: https://dnanexus.phacility.com/D1375

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