Non-descriptive CLI errors with missing artifacts

[Devdatta Kulkarni]

Using app create with a plan file that is missing the artifacts section returns a non-descriptive error message.

version: 1
name: missing_artifact
description: A plan that has no artifact.

$ solum app create --plan-file invalidplan.yaml
ERROR: artifacts

[Ed Cranford (ed--cranford)]

How about we add a check at https://github.com/stackforge/python-solumclient/blob/master/solumclient/solum.py#L654 and throw an exc.CommandError("Plan file has no artifacts.")?

[Devdatta Kulkarni (devdatta-kulkarni)]

@ed-cranford: Take a look at my patch. I am doing that and other checks.

https://review.openstack.org/#/c/162715/