Exclude python-ironicclient 3.0.0 from requirements.txt
Exclude python-ironicclient 3.0.0 from requirements.txt

It breaks no-auth mode and functional tests.

Change-Id: Ieea919ed50ab70c9f257d1bf3bd8241a713f5f7e
Depends-On: https://review.opendev.org/#/c/684376/

openstack/ironic-inspector,openstack/ironic-inspector