B2B-1610: Upgrade to Flysystem 2.0

Author: Roman Hanin

app/code/Magento/AwsS3/Driver/AwsS3.php

@@ -442,9 +442,6 @@ public function isDirectory($path): bool
         if (!$path) {
             return true;
         }
-
-        $path = $this->normalizeRelativePath($path, true);
-
         return $this->isTypeDirectory($path);
     }
 
@@ -457,7 +454,7 @@ public function isDirectory($path): bool
     private function isTypeDirectory($path)
     {
         try {
-            $meta = $this->metadataProvider->getMetadata($path);
+            $meta = $this->metadataProvider->getMetadata($this->normalizeRelativePath($path, true));
         } catch (UnableToRetrieveMetadata $e) {
             return false;
         }

app/code/Magento/RemoteStorage/Driver/Adapter/MetadataProvider.php

@@ -63,9 +63,7 @@ private function isDirectory($path): bool
     public function getMetadata(string $path): array
     {
         $metadata = $this->cache->getMetadata($path);
-        if ($metadata && is_array($metadata)
-            && ($metadata['type'] == 'dir' || $this->isMetadataComplete($metadata))
-        ) {
+        if (isset($metadata['type']) && ($metadata['type'] == 'dir' || $this->isMetadataComplete($metadata))) {
             return $metadata;
         }
         try {