Apply --reset-cache argument to bundle command (facebook#20706)

Summary:
The `--reset-cache` argument was not working correctly with the `bundle` command. This ensures the `--reset-cache` arg is passed to metro.

Fixes facebook#20703

Thank you for sending the PR! We appreciate you spending the time to work on these changes.
Help us understand your motivation by explaining why you decided to make this change.

If this PR fixes an issue, type "Fixes #issueNumber" to automatically close the issue when the PR is merged.
Pull Request resolved: facebook#20706

Differential Revision: D9400548

Pulled By: hramos

fbshipit-source-id: 2c7ed0226cfcdffa8cc77506500c314552baef3f

local-cli/bundle/buildBundle.js

@@ -56,7 +56,7 @@ async function buildBundle(
     platform: args.platform,
   };
 
-  const server = new Server(config);
+  const server = new Server({...config, resetCache: args.resetCache});
 
   try {
     const bundle = await output.build(server, requestOpts);