The previous version of the script did not quote VAGRANTUSERNAME, which caused
an error when running the script if the username contained `-` or other characters
that affect the Postgres syntax. Fix this using double-quotes.
This directory contains scripts that are used in building, managing,
testing, and other forms of work in a Zulip development environment.
Note that tools that are also useful in production belong in
scripts/ or should be Django management commands.