Init does not work with yarn workspaces

Copy from https://github.com/facebook/react-native/issues/24202 and there's a related issue https://github.com/react-native-community/react-native-cli/issues/271



## 🐛 Bug Report

I'm using `react-native init` to create a simple app inside a monorepo, but the cli seems to have problems with the yarn workspaces (with hoisting) - I'm also using lerna, but i don't think that lerna is causing the problems here.



## To Reproduce

I'm just running:

`react-native init KeepfyApp`



The log is:

```

This will walk you through creating a new React Native project in /home/gabriel/keepfy/root/packages/KeepfyApp

Using yarn v1.15.2

Installing react-native...

yarn add v1.15.2

[1/4] Resolving packages...

[2/4] Fetching packages...

[3/4] Linking dependencies...

**========= SOME WARNINGS NOT INCLUDED HERE =========**

[4/4] Building fresh packages...



success Saved 1 new dependency.

info Direct dependencies

info All dependencies

└─ react-native@0.59.2

Done in 12.57s.

internal/modules/cjs/loader.js:651

    throw err;

    ^



Error: Cannot find module '/home/gabriel/keepfy/root/packages/KeepfyApp/node_modules/react-native/package.json'

    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:649:15)

    at Function.Module._load (internal/modules/cjs/loader.js:575:25)

    at Module.require (internal/modules/cjs/loader.js:705:19)

    at require (internal/modules/cjs/helpers.js:14:16)

    at checkNodeVersion (/home/gabriel/.fnm/node-versions/v11.12.0/installation/lib/node_modules/react-native-cli/index.js:306:21)

    at run (/home/gabriel/.fnm/node-versions/v11.12.0/installation/lib/node_modules/react-native-cli/index.js:300:3)

    at createProject (/home/gabriel/.fnm/node-versions/v11.12.0/installation/lib/node_modules/react-native-cli/index.js:249:3)

    at init (/home/gabriel/.fnm/node-versions/v11.12.0/installation/lib/node_modules/react-native-cli/index.js:200:5)

    at Object.<anonymous> (/home/gabriel/.fnm/node-versions/v11.12.0/installation/lib/node_modules/react-native-cli/index.js:153:7)

    at Module._compile (internal/modules/cjs/loader.js:799:30)

```

The `Error: Cannot find module '/home/gabriel/keepfy/root/packages/KeepfyApp/node_modules/react-native/package.json'` is correct, there's no `node_modules` folder there, they are installed in the root folder, the correct path should be `/home/gabriel/keepfy/root/node_modules/react-native/package.json`





## Expected Behavior



I'm expecting the app to be created, but only the `package.json` is created.



## Code Example



```

// lerna.json

{

  "packages": [

    "packages/*"

  ],

  "npmClient": "yarn",

  "useWorkspaces": true,

  "version": "independent"

}



//package.json (root)

{

  "name": "root",

  "private": true,

  "devDependencies": {

    "lerna": "3.13.1",

    "yarn": "1.15.2"

  },

  "workspaces": [

    "packages/*"

  ],

  "scripts": {

    "build": "lerna run build --stream",

    "bootstrap": "lerna bootstrap"

  }

}

```

Wit

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