Sahara UI not able to scale due to old client being used

[Thomas Blanchard]

In the OS newton release of Sahara (5.x) the scale command returns the following data:

./sahara cluster-scale --name Cluster-1 --id d5324bb0-7bcc-46a0-b0f2-060b0bb67231 --json /root/cluster-scale.json
/openstack/venvs/sahara-14.0.7/lib/python2.7/site-packages/saharaclient/shell.py:718: DeprecationWarning: The sahara CLI is deprecated in favor of OpenStackClient plugin and will not be maintained anymore. For a Python library, continue using python-saharaclient.
  DeprecationWarning)
ERROR: scale() got an unexpected keyword argument 'resize_node_groups'

When using `openstack data-processing cluster scale` however the scaling will work fine.

The Horizon UI in newton also fails to scale properly complaining about an invalid template. After discussion this is believed to be caused by the client that is used to make the scaling request.

[Jeremy Freudberg (jfreud)]

I don't think we quite have the cause of the UI issue pinned down.

I need to try to replicate this in my own env first.

`sahara cluster-scale` cannot be fixed as old CLI was removed.

[Thomas Blanchard (tblanchard0001)]

So was the idea to cause the sahara command to call the unified client in newton?

[Luigi Toscano (ltoscano)]

Redirecting sahara to openstack dataprocessing is a too much for a branch which is almost at its end of life.
While fixing the UI is possible, I advise to use the new CLI also in Newton.