Circle CI: Use xlarge in Node jobs
Circle CI: Use xlarge in Node jobs

Summary:
Use Circle CI's "xlarge" resource class in all Node jobs. This resource provides additional resources and should reduce execution time in our Node jobs.

Changelog: [Internal]

Reviewed By: cortinico

Differential Revision: D35294648

fbshipit-source-id: cfc175b4b327ca02d7094688f870cfea757915e6

facebook/react-native,janicduplessis/react-native,javache/react-native,facebook/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,facebook/react-native,facebook/react-native,javache/react-native,facebook/react-native,facebook/react-native,javache/react-native,janicduplessis/react-native,javache/react-native,javache/react-native,javache/react-native,janicduplessis/react-native