MAGETWO-65208: Store checksum for every section of configuration file & change behavior on read-only FS & add sorting of importers

Author: Bohdan Korablov

app/code/Magento/Deploy/Model/DeploymentConfig/ImporterPool.php

@@ -129,12 +129,10 @@ public function getImporters()
 
             $importerObj = $this->objectManager->get($importer['class']);
             if (!$importerObj instanceof ImporterInterface) {
-                throw new ConfigurationMismatchException(
-                    __(
-                        '%1: Instance of %2 is expected, got %3 instead',
-                        $section,
-                        ImporterInterface::class, get_class($importerObj
-                    )
+                throw new ConfigurationMismatchException(__(
+                    '%1: Instance of %2 is expected, got %3 instead',
+                    $section,
+                    ImporterInterface::class, get_class($importerObj)
                 ));
             }
             $result[$section] = $importerObj;