Split suite and default tests to different groups

- Unit test fix

Author: KevinBKozan

dev/tests/unit/Magento/FunctionalTestFramework/Util/Sorter/ParallelGroupSorterTest.php

@@ -98,7 +98,7 @@ public function testSortWithSuites()
         $actualResult = $testSorter->getTestsGroupedBySize($sampleSuiteArray, $sampleTestArray, 500);
 
         // verify the resulting groups
-        $this->assertCount(4, $actualResult);
+        $this->assertCount(5, $actualResult);
 
         $expectedResults =  [
             1 => ['mockSuite1_0'],