Rename AutoTime and AutoTimeZone APIs

* Rename setAutoTime and getAutoTime to
  setAutoTimeEnabled and getAutoTimeEnabled.
* Rename setAutoTimeZone and getAutoTimeZone
  to setAutoTimeZoneEnabled and
  getAutoTimeZoneEnabled.

Bug: 150958098
Test: atest com.android.cts.devicepolicy.OrgOwnedProfileOwnerTest#testSetTime
      atest com.android.cts.devicepolicy.OrgOwnedProfileOwnerTest#testSetTimeZone
      atest com.android.cts.devicepolicy.MixedDeviceOwnerTest#testSetAutoTimeEnabled
      atest com.android.cts.devicepolicy.MixedDeviceOwnerTest#testSetAutoTimeZoneEnabled
      atest com.android.cts.devicepolicy.MixedDeviceOwnerTest#testSetTime
      atest com.android.cts.devicepolicy.MixedDeviceOwnerTest#testSetTimeZone
      atest com.android.cts.devicepolicy.ManagedProfileTest#testParentProfileApiDisabled
Change-Id: I57a220549c33bcbbf2f3e37a1a724965ef2a9546