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

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Pull Request resolved: facebook#20706

Differential Revision: D9400548

Pulled By: hramos

fbshipit-source-id: 2c7ed0226cfcdffa8cc77506500c314552baef3f

Author: rozele

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);