build(flow): ignore config-chain/test/broken.json

[mrfelton]

Description:

Ignore invalid json files in flow config to prevent expected failures from producing errors.

See facebook/flow#869

Motivation and Context:

We are getting this error when running flow:

Error ┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈ node_modules/npm/node_modules/config-chain/test/broken.json:11:3

Unexpected string

      8│     "url": "https://github.com/dominictarr/config-chain.git"
      9│   }
     10│   //missing , and then this comment. this json is intensionally invalid
     11│   "dependencies": {
     12│     "proto-list": "1",
     13│     "ini": "~1.0.2"
     14│   },

See facebook/flow#2364

How Has This Been Tested?

run yarn flow and verify error is no longer produced,

Screenshots (if appropriate):

Types of changes:

Bug fix

Checklist:

• My code follows the code style of this project.
• I have reviewed and updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes where needed.
• All new and existing tests passed.
• My commits have been squashed into a concise set of changes.

[coveralls]

Coverage remained the same at 16.201% when pulling 1de5ae6 on mrfelton:fix/flow-ignore-broken-config-chain into 800ece4 on LN-Zap:master.