Updated staff_api unit test to accommadate the changes in export_utils.
Updated staff_api unit test to accommadate the changes in export_utils.

macarthur-lab/seqr,ssadedin/seqr,macarthur-lab/seqr,ssadedin/seqr,macarthur-lab/seqr,ssadedin/seqr,ssadedin/seqr,ssadedin/seqr,macarthur-lab/seqr,macarthur-lab/seqr