Summary:
Since 0.8.43 regenerator has regenerator-runtime dependency.
Fixes one js test in trunk
Closes https://github.com/facebook/react-native/pull/7351

Reviewed By: davidaurelio

Differential Revision: D3252699

Pulled By: bestander

fb-gh-sync-id: cedb122eb8e9f3a5e40a5313482bc2282511c71e
fbshipit-source-id: cedb122eb8e9f3a5e40a5313482bc2282511c71e