feat(storage): Set CRC32C as the default checksum option (#9107)

fix: Set CRC32C as the default checksum option

Co-authored-by: Priti Chattopadhyay <cpriti@google.com>

Author: salilg-eng

Storage/src/Connection/Rest.php

@@ -479,7 +479,7 @@ private function resolveUploadOptions(array $args)
         $args += [
             'bucket' => null,
             'name' => null,
-            'validate' => true,
+            'validate' => 'crc32',
             'resumable' => null,
             'streamable' => null,
             'predefinedAcl' => null,

Storage/tests/Unit/Connection/RestTest.php

@@ -646,6 +646,16 @@ public function validationMethod()
                 true,
                 true,
                 false
+            ],[
+                ['validate' => null],
+                true,
+                true,
+                'crc32'
+            ], [
+                ['validate' => ''],
+                true,
+                true,
+                'crc32'
             ]
         ];
     }