The module has been tested with the PrestaShop 1.7.4.4 and 1.7.5.0, and PHP 7.1 and 7.2.
The Mastercard Payment Gateway Services module is not bundled in the PrestaShop download.
Download the zip file for the module here: https://github.com/Mastercard-Gateway/gateway-prestashop-module/releases
You will then upload the zip file in prestashop, setup the merchant configuration and you are good to go!