Virtual-environments: Add GitHub CLI

[alvarosanchez]

Tool information

• Tool name: gh
• Tool license: MIT
• Add or update? Add
• Desired version: 0.7.0
• URL for tool's homepage: https://github.com/cli/cli

Area for Triage:
Packages

Question, Bug, or Feature?:
Feature

Virtual environments affected

• [x] macOS 10.15
• [x] Ubuntu 16.04 LTS
• [x] Ubuntu 18.04 LTS
• [x] Windows Server 2016 R2
• [x] Windows Server 2019

Can this tool be installed during the build?
Yes

Tool installation time in runtime
I hope it's fast :)

Are you willing to submit a PR?
Potentially

[vmapetr]

Hi @alvarosanchez! This tool can be easily installed in runtime by following steps:

### Ubuntu
wget https://github.com/cli/cli/releases/download/v0.7.0/gh_0.7.0_linux_amd64.deb
sudo dpkg -i ./gh_0.7.0_linux_amd64.deb

### Macos
brew install github/gh/gh

### Windows
choco install gh

It take approximately 20 seconds on each OS.

@alepauly What do you think? Perhaps we can add gh to the images as a potential replacement for the hub?

[alvarosanchez]

Hi @vmapetr, thanks for the feedback. I know how to install it. The point of this issue is to have it preinstalled, though.

[maxim-lobanov]

I think it is not big deal to have both hub and gh on images.
They are compatible and looks like functionality is a bit different: https://github.com/cli/cli/blob/master/docs/gh-vs-hub.md

[dsame]

PR has been merged. The changes will be delivered to the production on next deploy

[miketimofeev]

@alvarosanchez all the images have been deployed! I'm going to close the issue, but feel free to contact us if you have any concerns.
Thank you!