Fix OverlayHostTest to work on secondary users.

This is critical for automotive CTS approval.

bug: 140734485
Test: cts-tradefed run cts-dev -m CtsAppSecurityHostTestCases -t android.appsecurity.cts.OverlayHostTest
Change-Id: I1b0b7dd708526fe1d0102d6b8862d45b83c45fdd
1 file changed