overlay: several Dialer VVM config fixes

* Change `vvm_type_omtp_*` to `vvm_type_omtp` (As before, Google Dialer
  uses these types, but our Dialer does not)
* enable VVM for all "Bouygues Telecom Business-Distribution" MVNOs
  instead of just one MVNO (NRJ). This has been validated with a device
  using the "Auchan Telecom" MVNO.

Change-Id: Iecada64dc758952aa9c8f8e0efcebc719d16d352