MAGETWO-48786: Correct Semantic Version Check

Author: vklymenko

dev/tests/functional/tests/app/Magento/Setup/Test/TestCase/UpgradeSystemTest.php

@@ -74,7 +74,7 @@ public function test(
         );
         $version = $upgrade['upgradeVersion'];
 
-        $suffix = "( (CE|EE))$";
+        $suffix = "( (CE|EE|B2B))$";
         $normalVersion = '(0|[1-9]\d*)';
         $preReleaseVersion = "((0(?!\\d+(\\.|\\+|{$suffix}))|[1-9A-Za-z])[0-9A-Za-z-]*)";
         $buildVersion = '([0-9A-Za-z][0-9A-Za-z-]*)';