Add WRITE_SETTINGS permission for ManagedProfileRingtoneTest

    Uses appops to give permission but it's not declared in manifest.

Test: run cts -m  CtsDevicePolicyManagerTestCases -t com.android.cts.devicepolicy.ManagedProfileRingtoneTest
Bug: 149827369
Change-Id: I544961ba0d13ddf61cfd49018bfdb41bebe8f870
1 file changed