Log Braintree errors to system.log & display to end user Magento 2.1

Add Braintree errors to Magento [login to view URL] when validation fails. We would like these changes to be pulled by the Magento development team for future releases. This cannot be developed as a Magento module. Requirements 1) The number of validation errors must be logged first on its own line 2) Individual errors must be logged on their own line, and must include the code, attribute, and message returned from Braintree. - [login to view URL] 3) Errors related to input on customer payment form must be displayed to end user 4) Must adhere to the Magento technical guidelines and backwards compatibility development documents - [login to view URL] - [login to view URL] 5) Solution must be validated on the following deployment stack: - Magento 2.1.9 - Ubuntu 16.04 - Apache 2.4.18 - MySQL 5.7.19 - PHP 7.0.22 The current version can be found here: [login to view URL] Lines 173 - 178 may be a good starting point. The above URL is for the Braintree project, and no pull request should be made to that repository.