Deivids Briedis

Drush aliases don't work

2

Drush aliases don't work the way they are setup at the moment. Running `lando drush @main uli` gets stuck on: `Connecting to http://ssh.dev.wdr.io/ [35.228.188.138] port 22.` Seems the reason is...

# Changes proposed in this PR: - added an example code block in silta-main.yml how to preserve certain users from being sanitized on feature environments; - updated the README.