PPA for Ubuntu 19.10 / eoan or update install script

Description

Now that Ubuntu 19.10 Eoan is released (10/17/19), the install script is no longer correct due to a missing PPA for the new release name.

I have been using the 19.04 Disco PPA successfully to this point, so an option would be to update the script to use disco for now till an eaon verison is ready.

Steps to Reproduce

1. Follow install guide, run sudo apt install brave-browser{-beta,-nightly}
2. View error

Actual result:

E: Failed to fetch https://brave-browser-apt-beta.s3.brave.com/dists/eoan/InRelease 403 Forbidden [IP: 151.101.50.217 443]

Expected result:

A successful installation of the browser.

Reproduces how often:

100% of the time

Brave version (brave://version info)

All repos: stable, beta, dev

[fmarier]

For anybody looking to install Brave on Ubuntu 19.10, follow these instructions:

sudo apt install apt-transport-https curl

curl -s https://brave-browser-apt-release.s3.brave.com/brave-core.asc | sudo apt-key --keyring /etc/apt/trusted.gpg.d/brave-browser-release.gpg add -

echo "deb [arch=amd64] https://brave-browser-apt-release.s3.brave.com/ bionic main" | sudo tee /etc/apt/sources.list.d/brave-browser-release-bionic.list

sudo apt update

sudo apt install brave-browser

The distro version (“bionic”, “disco”, “eoan”) doesn’t matter because they are all aliases of one another. There is a single Brave .deb package that works for all versions.

[fmarier]

While we’re still waiting for the proper fix to be deployed (brave/brave-core#3750), we have added the two new Ubuntu release names to the Brave repos.

Our official installation instructions should now work on Ubuntu 19.10.