Add some logging for the Save Credit Card transaction
Add some logging for the Just Click Shop transaction
Spec for logging on Save Credict Card operation
Fix security code masking
Specs for logging on Just Click Shop operation
Redact the JustClickKey value from a save_credit_card's XML response

We do not want to let any sensitive data exposed on log files.
Refactor JustClickKey redacting by using lookbehind and lookahead regexp

Thanks @britto!
Redact JustClickKey value from the request sent to JustClickShop call
s/mask/redact/
Reveme unnecessary should_receive calls
Avoid accessing the `logger` attribute with constant separator
Make SaveCreditCard's XML response complaint with the WSDL

* The XML response includes `CorrelationId` and `Success` nodes.
* The `CorrelationId` on response is expected to be the same as the
  `:request_id` on request.
Ensure the expected request params and response fields are logged out
Merge branch 'jb-rs-protected-credit-card-logging'