ironic-python-agent/ironic_python_agent at c03021fee25f47ccd2c04e0d91341cd829c9e600 - ironic-python-agent - OpenDev: Free Software Needs Free Tools

This change removes several usages of eventlet from IPA:
- Upgrades all requirements on oslo library versions to new ones that
 support non-eventlet use.
- Removes use of the eventlet wsgi server (via oslo_service.wsgi) and
 replaces it with the cheroot wsgi server.
- Removes explicit patching of python modules with eventlet
Note that due to some oslo libraries still using ``eventlet`` to detect
and workaround it's use. This means that it is still installed in
environments alongside IPA, even if it's not used or patched into any
modules.
Depends-On: https://review.opendev.org/c/openstack/requirements/+/947727
Change-Id: I9accab2d5e9529a88ef5d3db85e76901f14114eb