ENGCOM-3036: [Forwardport] Allow usage of config-global.php when running Integration Tests #18201

 - Merge Pull Request #18201 from mage2pratik/magento2:2.3-develop-PR-port-16361
 - Merged commits:
   1. 0d0b5c0
   2. 81076e1
   3. 421ba0b
   4. c0cb405
   5. 99b1ca7

Author: magento-engcom-team

dev/tests/integration/framework/Magento/TestFramework/Application.php

@@ -498,6 +498,7 @@ public function install($cleanup)
         $this->_ensureDirExists($this->_initParams[$dirs][DirectoryList::VAR_DIR][DirectoryList::PATH]);
 
         $this->copyAppConfigFiles();
+        $this->copyGlobalConfigFile();
 
         $installParams = $this->getInstallCliParams();
 
@@ -557,6 +558,17 @@ private function copyAppConfigFiles()
             }
         }
     }
+    
+    /**
+     * Copies global configuration file from the tests folder (see TESTS_GLOBAL_CONFIG_FILE)
+     *
+     * @return void
+     */
+    private function copyGlobalConfigFile()
+    {
+        $targetFile = $this->_configDir . '/config.local.php';
+        copy($this->globalConfigFile, $targetFile);
+    }
 
     /**
      * Gets a list of CLI params for installation