[BUG] Stack trace with --add-interface on 2.1

[sadsfae]

QUADS VERSION quads-2.1.0-20241002.noarch
OS VERSION Fedora 40 / Python 3.12

quads --add-interface --interface-name em1 --interface-mac 52:54:00:d9:5d:df --interface-switch-ip 10.12.22.201 --interface-port xe-0/0/1:0 --interface-vendor "Intel" --interface-speed 1000 --host m34-h05-000-r650.example.com

This produces a stack trace:

Oct 05 13:18:47 host-03 gunicorn[823]:   File "/usr/lib/python3.12/site-packages/flask/app.py", line 865, in dispatch_request
Oct 05 13:18:47 host-03 gunicorn[823]:     return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)  # type: ignore[no-any-return]
Oct 05 13:18:47 host-03 gunicorn[823]:            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 05 13:18:47 host-03 gunicorn[823]:   File "/usr/lib/python3.12/site-packages/quads/server/blueprints/__init__.py", line 83, in decorated_function
Oct 05 13:18:47 host-03 gunicorn[823]:     return f(*args, **kwargs)
Oct 05 13:18:47 host-03 gunicorn[823]:            ^^^^^^^^^^^^^^^^^^
Oct 05 13:18:47 host-03 gunicorn[823]:   File "/usr/lib/python3.12/site-packages/quads/server/blueprints/interfaces.py", line 72, in create_interface
Oct 05 13:18:47 host-03 gunicorn[823]:     if speed and not speed > 0:
Oct 05 13:18:47 host-03 gunicorn[823]:                      ^^^^^^^^^
Oct 05 13:18:47 host-03 gunicorn[823]: TypeError: '>' not supported between instances of 'str' and 'int'

[sadsfae]

Proposed patchset: https://review.gerrithub.io/c/redhat-performance/quads/+/1202220