Since pip no longer guarantees that it will no longer normalize
underscore (_) in distribution names to dash (-) in `pip freeze`, `pip
list`, and `pip show` (https://pip.pypa.io/en/stable/news/#id73) , in
the interest of minimizing churn, pip-compile should normalize
requirements names instead. This will ensure there are no changes to
requirements files compiled with earlier versions of pip-tools/pip.

This test doesn't actually modify the requirements file, so update it to
start with a normalized requirement name so it can continue to expect a
normalized requirement name.

This is where we diverge from pip's output: pip no longer guarantees
that it will canonicalize requirement names in `pip freeze` but we will
continue to output canonicalized names.

Co-authored-by: wouter bolsterlee <wouter@bolsterl.ee>

A new log handler for the 'console' logger was added in later versions
of pip, which doesn't require this workaround.

Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>