add backup CTS PermissionTest to presubmit for policy package.

This is to catch failures like in b/135190563 which was fixed in ag/8024777

Bug: 135190563
Bug: 113325494

Test: atest android.backup.cts.PermissionTest
Change-Id: Ibec7c6e20ccf3d05af83eae00ced35e8ba23579f
1 file changed