Upgrade eslint to v5.0.1 on xplat
Upgrade eslint to v5.0.1 on xplat

Summary:
@public

Upgrades eslint to v5.0.1

Updated `eslint-plugin-eslint-comments`, which was necessary for eslint 5

Disabled the `prefer-const` rule while we wait for https://github.com/eslint/eslint/issues/10520 to be fixed/published.

Reviewed By: zertosh

Differential Revision: D8692838

fbshipit-source-id: fa0cae3e299af2350c8c30ceb94d70740ee84eab

javache/react-native,arthuralee/react-native,facebook/react-native,javache/react-native,facebook/react-native,myntra/react-native,janicduplessis/react-native,facebook/react-native,janicduplessis/react-native,myntra/react-native,myntra/react-native,janicduplessis/react-native,exponent/react-native,myntra/react-native,janicduplessis/react-native,janicduplessis/react-native,exponent/react-native,exponentjs/react-native,hoangpham95/react-native,janicduplessis/react-native,facebook/react-native,exponentjs/react-native,exponentjs/react-native,myntra/react-native,facebook/react-native,pandiaraj44/react-native,arthuralee/react-native,pandiaraj44/react-native,hammerandchisel/react-native,facebook/react-native,pandiaraj44/react-native,facebook/react-native,hoangpham95/react-native,hoangpham95/react-native,facebook/react-native,hoangpham95/react-native,myntra/react-native,exponent/react-native,javache/react-native,hammerandchisel/react-native,arthuralee/react-native,exponent/react-native,hoangpham95/react-native,pandiaraj44/react-native,pandiaraj44/react-native,exponent/react-native,javache/react-native,hoangpham95/react-native,arthuralee/react-native,pandiaraj44/react-native,hammerandchisel/react-native,exponentjs/react-native,hoangpham95/react-native,javache/react-native,javache/react-native,arthuralee/react-native,hammerandchisel/react-native,javache/react-native,exponent/react-native,javache/react-native,myntra/react-native,pandiaraj44/react-native,hammerandchisel/react-native,hammerandchisel/react-native,javache/react-native,janicduplessis/react-native,pandiaraj44/react-native,facebook/react-native,exponentjs/react-native,hoangpham95/react-native,exponent/react-native,exponentjs/react-native,myntra/react-native,hammerandchisel/react-native,myntra/react-native,exponent/react-native,exponentjs/react-native,exponentjs/react-native,hammerandchisel/react-native,janicduplessis/react-native