Requests is an ACME dependency

[dereckson]

The documentation stresses the Python requests library is needed.

Yet, this plugin is for certbot, which (i) needs requests (ii) relies on acme Python package, which also need requests.

Is there a use case where this plugin could be used standalone without acme/certbot not installed (e.g. for CI purpose)?

References:

• certbot/setup.py
• acme/setup.py