Issue #2771331 by johan.gant: drupal/core-uuid composer.json not tested by...

Issue #2771331 by johan.gant: drupal/core-uuid composer.json not tested by \Drupal\Tests\ComposerIntegrationTest::testComposerJson()

(cherry picked from commit 442fea7c)

core/tests/Drupal/Tests/ComposerIntegrationTest.php

@@ -64,6 +64,7 @@ protected function getPaths() {
       $this->root . '/core/lib/Drupal/Component/Serialization',
       $this->root . '/core/lib/Drupal/Component/Transliteration',
       $this->root . '/core/lib/Drupal/Component/Utility',
+      $this->root . '/core/lib/Drupal/Component/Uuid',
     ];
   }