[stable/zed] [ATMOSPHERE-327] images(python-openstackclient): Add python-ironicclient

[vexxhost-bot]

Manual cherrypick required.

#1718 failed to apply on top of branch "stable/zed":

Applying: images(python-openstackclient): Add python-ironicclient
Using index info to reconstruct a base tree...
M	images/python-openstackclient/Dockerfile
Falling back to patching base and 3-way merge...
Auto-merging images/python-openstackclient/Dockerfile
CONFLICT (content): Merge conflict in images/python-openstackclient/Dockerfile
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
Patch failed at 0001 images(python-openstackclient): Add python-ironicclient
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To restore the original branch and stop patching, run "git am --abort".