Use `findPlugins` from `react-native-local-cli`

Summary: This module now lives outside of the React Native repo.

Reviewed By: TheSavior

Differential Revision: D13337412

fbshipit-source-id: 548868e5f1f3812574fda3d235eb9d47c81d6522

jest/hasteImpl.js

@@ -11,7 +11,7 @@
 'use strict';
 
 const path = require('path');
-const findPlugins = require('../local-cli/core/findPlugins');
+const findPlugins = require('react-native-local-cli/core/findPlugins');
 
 const REACT_NATIVE_CI = process.cwd() === path.resolve(__dirname, '..');