Support for First Data E4 "TransArmor" card storage

- Feature docs: https://firstdata.zendesk.com/entries/21303361-transarmor-tokenization
- API docs: https://firstdata.zendesk.com/entries/407571-first-data-global-gateway-e4sm-web-service-api-reference-guide#3.4

TransArmor is only supported by the v11 (or lower) of the API, where as previously FirstdataE4Gateway was not directly specifying a version, defaulting to the latest v12. In tests between both version of the API, the only incompatible difference was that `logon_message`, `error_number`, and `error_description` are not specified for *successful* transactions in v11. The response construction and tests have been adjusted to accommodate for this difference.