Disable git hooks for the upgrade process
Disable git hooks for the upgrade process

Summary:
I'm loving `react-native-git-upgrade`, such a life and time saver, but when doing the upgrade, if git hooks are defined globally to be applied, `react-native-git-upgrade` uses these git hooks, although they might not be relevant to the upgrade process (and potentially make it way longer).

Btw, thanks ncuillery for the great tool 😄

To test, I :
* cloned my project
* upgraded it with the npm published `react-native-git-upgrade` version : Git hooks are running during the upgrade
* cloned the `react-native` repo
* did my modifications on the `react-native-git-upgrade/cliEntry.js` file
* `npm i -g react-native-git-upgrade/` after running `yarn` in that folder
* Re-cloned my project in another folder
* Upgraded it with `react-native-git-upgrade` : The hooks are not running anymore, yay!

[CLI] [ENHANCEMENT] [react-native/react-native-git-upgrade] - Do not run git hooks in the upgrade process

I plan to add an option to the cli so you can pass `--verify` or `--use-git-hooks` if you DO want your git hooks to run, but don't have the time right now and I think the default should be to not run them.
Closes https://github.com/facebook/react-native/pull/16855

Differential Revision: D6353781

Pulled By: hramos

fbshipit-source-id: e4b0f55d10c37bc805b32cb4c0fe3c863346482d

hoangpham95/react-native,dikaiosune/react-native,facebook/react-native,exponentjs/react-native,hoangpham95/react-native,rickbeerendonk/react-native,arthuralee/react-native,dikaiosune/react-native,hoastoolshop/react-native,janicduplessis/react-native,hoastoolshop/react-native,exponentjs/react-native,kesha-antonov/react-native,jevakallio/react-native,jevakallio/react-native,facebook/react-native,exponent/react-native,hammerandchisel/react-native,hammerandchisel/react-native,pandiaraj44/react-native,jevakallio/react-native,rickbeerendonk/react-native,pandiaraj44/react-native,exponent/react-native,rickbeerendonk/react-native,exponent/react-native,myntra/react-native,kesha-antonov/react-native,exponentjs/react-native,rickbeerendonk/react-native,hammerandchisel/react-native,Bhullnatik/react-native,ptmt/react-native-macos,kesha-antonov/react-native,pandiaraj44/react-native,exponentjs/react-native,dikaiosune/react-native,rickbeerendonk/react-native,hoastoolshop/react-native,myntra/react-native,rickbeerendonk/react-native,hoangpham95/react-native,hoangpham95/react-native,myntra/react-native,dikaiosune/react-native,hammerandchisel/react-native,arthuralee/react-native,janicduplessis/react-native,Bhullnatik/react-native,jevakallio/react-native,arthuralee/react-native,jevakallio/react-native,kesha-antonov/react-native,pandiaraj44/react-native,hoastoolshop/react-native,dikaiosune/react-native,javache/react-native,janicduplessis/react-native,exponentjs/react-native,javache/react-native,kesha-antonov/react-native,facebook/react-native,exponent/react-native,Bhullnatik/react-native,hammerandchisel/react-native,arthuralee/react-native,javache/react-native,javache/react-native,jevakallio/react-native,rickbeerendonk/react-native,pandiaraj44/react-native,kesha-antonov/react-native,facebook/react-native,myntra/react-native,myntra/react-native,rickbeerendonk/react-native,javache/react-native,javache/react-native,exponent/react-native,janicduplessis/react-native,jevakallio/react-native,hoastoolshop/react-native,Bhullnatik/react-native,janicduplessis/react-native,arthuralee/react-native,javache/react-native,facebook/react-native,exponent/react-native,facebook/react-native,dikaiosune/react-native,Bhullnatik/react-native,kesha-antonov/react-native,ptmt/react-native-macos,myntra/react-native,hoangpham95/react-native,javache/react-native,facebook/react-native,ptmt/react-native-macos,hammerandchisel/react-native,pandiaraj44/react-native,dikaiosune/react-native,facebook/react-native,Bhullnatik/react-native,ptmt/react-native-macos,hoastoolshop/react-native,Bhullnatik/react-native,hoangpham95/react-native,pandiaraj44/react-native,myntra/react-native,pandiaraj44/react-native,exponentjs/react-native,javache/react-native,facebook/react-native,exponent/react-native,exponent/react-native,janicduplessis/react-native,exponentjs/react-native,kesha-antonov/react-native,myntra/react-native,myntra/react-native,rickbeerendonk/react-native,dikaiosune/react-native,janicduplessis/react-native,ptmt/react-native-macos,hoastoolshop/react-native,hammerandchisel/react-native,jevakallio/react-native,Bhullnatik/react-native,hoangpham95/react-native,ptmt/react-native-macos,ptmt/react-native-macos,hammerandchisel/react-native,hoangpham95/react-native,kesha-antonov/react-native,hoastoolshop/react-native,janicduplessis/react-native,ptmt/react-native-macos,jevakallio/react-native,exponentjs/react-native