Use packaged react-native in test-e2e-local script (facebook#36703)

Summary:
The current `test-e2e-local` script had two bugs:
- On [this](https://github.com/facebook/react-native/blob/c1c22ebacc4097ce56f19385161ebb23ee1624b3/scripts/test-e2e-local.js#L219) line we were initializing a new RN project with the packed `react-native` created [here](https://github.com/facebook/react-native/blob/c1c22ebacc4097ce56f19385161ebb23ee1624b3/scripts/test-e2e-local.js#L211)
- We were updating the local RN version after running `npm pack` [here](https://github.com/facebook/react-native/blob/c1c22ebacc4097ce56f19385161ebb23ee1624b3/scripts/test-e2e-local.js#L214). This meant that the version inside the packaged `react-native-xyz.tgz` was not updated since we ran `pack` before updating it. This was fine since the `init` command was using the local `react-native` repository instead of the packed version.

## Changelog:

[INTERNAL] [FIXED] - Use packaged react-native in test-e2e-local script
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Pick one each for the category and type tags:

[INTERNAL] [FIXED] - Use packaged react-native in test-e2e-local script

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Pull Request resolved: facebook#36703

Test Plan:
- Run `yarn test-e2e-local -t RNTestProject -p Android`. The command should succeed.

I am not completely sure how to double check that we are using the packed version. Locally, I have a `fsmonitor--daemon.ipc` in my `react-native/.git` that can't be copied. The `.git` folder would be copied only when `cli.js init` was called with the whole repository  – which is how I found out about the issue in the first place.

Reviewed By: hoxyq

Differential Revision: D44504599

Pulled By: cipolleschi

fbshipit-source-id: e57e2858bab46d4f978eed3cbaf3e504138594b8

scripts/test-e2e-local.js

@@ -207,16 +207,16 @@ if (argv.target === 'RNTester') {
     localMavenPath,
   );
 
-  // create locally the node module
-  exec('npm pack', {cwd: reactNativePackagePath});
-
   const localNodeTGZPath = `${reactNativePackagePath}/react-native-${releaseVersion}.tgz`;
   exec(`node scripts/set-rn-template-version.js "file:${localNodeTGZPath}"`);
 
+  // create locally the node module
+  exec('npm pack', {cwd: reactNativePackagePath});
+
   pushd('/tmp/');
   // need to avoid the pod install step - we'll do it later
   exec(
-    `node ${reactNativePackagePath}/cli.js init RNTestProject --template ${repoRoot} --skip-install`,
+    `node ${reactNativePackagePath}/cli.js init RNTestProject --template ${localNodeTGZPath} --skip-install`,
   );
 
   cd('RNTestProject');