setAutoTimeRequired disabled on managed profile

* setAutoTimeRequired can no longer be called on a managed profile
* Override setAutoTimeRequired CTS test in MixedManagedProfileOwnerTest

Bug: 156620695
Test: atest com.android.cts.devicepolicy.MixedDeviceOwnerTest#testSetAutoTimeRequired
      atest com.android.cts.devicepolicy.MixedProfileOwnerTest#testSetAutoTimeRequired
      atest com.android.cts.devicepolicy.MixedManagedProfileOwnerTest#testSetAutoTimeRequired
Change-Id: Iae5a6a9f2e63ebd1b8c5dd25454dc7d99a303230
1 file changed