magento/payment-improvements#1: Add Brazilian Credit Cards Support

 - added patterns for Brazilian cards to validator

Author: Volodymyr Kublytskyi

app/code/Magento/Payment/Model/Method/Cc.php

@@ -148,6 +148,22 @@ public function validate()
                     'JCB' => '/^35(2[8-9][0-9]{12,15}|[3-8][0-9]{13,16})/',
                     'MI' => '/^(5(0|[6-9])|63|67(?!59|6770|6774))\d*$/',
                     'MD' => '/^(6759(?!24|38|40|6[3-9]|70|76)|676770|676774)\d*$/',
+
+                    //Hipercard
+                    'HC' => '/^((606282)|(637095)|(637568)|(637599)|(637609)|(637612))\d*$/',
+                    //Elo
+                    'ELO' => '/^((509091)|(636368)|(636297)|(504175)|(438935)|(40117[8-9])|(45763[1-2])|' .
+                        '(457393)|(431274)|(50990[0-2])|(5099[7-9][0-9])|(50996[4-9])|(509[1-8][0-9][0-9])|' .
+                        '(5090(0[0-2]|0[4-9]|1[2-9]|[24589][0-9]|3[1-9]|6[0-46-9]|7[0-24-9]))|' .
+                        '(5067(0[0-24-8]|1[0-24-9]|2[014-9]|3[0-379]|4[0-9]|5[0-3]|6[0-5]|7[0-8]))|' .
+                        '(6504(0[5-9]|1[0-9]|2[0-9]|3[0-9]))|' .
+                        '(6504(8[5-9]|9[0-9])|6505(0[0-9]|1[0-9]|2[0-9]|3[0-8]))|' .
+                        '(6505(4[1-9]|5[0-9]|6[0-9]|7[0-9]|8[0-9]|9[0-8]))|' .
+                        '(6507(0[0-9]|1[0-8]))|(65072[0-7])|(6509(0[1-9]|1[0-9]|20))|' .
+                        '(6516(5[2-9]|6[0-9]|7[0-9]))|(6550(0[0-9]|1[0-9]))|' .
+                        '(6550(2[1-9]|3[0-9]|4[0-9]|5[0-8])))\d*$/',
+                    //Aura
+                    'AU' => '/^5078\d*$/'
                 ];
 
                 $ccNumAndTypeMatches = isset(