Indicate the default device for Credit Providers.

When selecting the card operator to create a payment of this kind,
we should switch to the default device (eg, Visa always passes in
Cielo, Master always goes in redecard).

Change-Id: I58a1c663d77ad45c40b07979b34b201bcd5dfb97
Fixes: http://bugs.async.com.br/show_bug.cgi?id=5488