Check failing integration tests

[dillonwilliams]

All tests aren't run on Travis; some filesystem client tests have started failing recently.
Errors:

 test_local_patient_search[initialize_filesystem_client] 

>       assert patient_datasets[0].PatientSex == 'F'
E           AttributeError: 'Dataset' object has no attribute 'PatientSex'

test_local_patient_search_wildcard[initialize_filesystem_client] 
>       assert len(patient_datasets) > 1
E       assert 0 > 1
E        +  where 0 = len([])