Open Stack

Hello fellow openstackers,

I'd like to open an FFE request to convert the ironic events notifier
from the current ironicclient to openstacksdk with the change
https://review.opendev.org/682040
This requires also a bump of the versions of mock and openstacksdk in
lower-constraints, included in the CR.
The change has been tested in a devstack environment and passes the zuul checks.

Thank you!

Riccardo Pittau
rpittau||elfosardo