message: fix: add global setup/teardown to valid_config
  This will fix the false warnings on using the Global Setup/Teardown
  options
diff: @@ -38,6 +38,8 @@ export default ({
  displayName: 'project-name',
  expand: false,
  forceExit: false,
  + globalSetup: 'setup.js',
  + globalTeardown: 'teardown.js',
  globals: {},
  haste: {
  providesModuleNodeModules: ['react', 'react-native'],
  