Manage FINANCED_DEVICE_KIOSK role in CTS test.

Now that the Shell does not have the MANAGE_DEVICE_LOCK_STATE permission,
we need to add/remove the FINANCED_DEVICE_KIOSK role to the test
itself.

Bug: 269374938
Test: atest CtsDeviceLockTestCases

Change-Id: I1b71e2071d8288bc769e92611df511a3ac196f57
5 files changed