ErrorCode: add new codes for PaymentProcessor
ErrorCode: add new codes for PaymentProcessor

See https://github.com/killbill/killbill/issues/568.

Signed-off-by: Pierre-Alexandre Meyer <ff019a5748a52b5641624af88a54a2f0e46a9fb5@mouraf.org>

killbill/killbill-api,killbill/killbill-api