Upgrade case for setAutoTimeRequired

* Modified setAutoTimeRequired to call
  pushUserRestrictions after requireAutoTime
  in the active admin is set.
* Modified addSyntheticRestrictions in the
  active admin to include the auto time
  required case.

Bug: 145604635
Test: atest com.android.server.devicepolicy.DevicePolicyManagerTest
      atest com.android.server.devicepolicy.DevicePolicyManagerServiceMigrationTest
Change-Id: Ida4952eeec8ec12573c4049a9bf8e0ce6a951a86