Programmatic output and extra newlines in CLI commands

[Julie Pichon]

Example:
---------------------------------------------
$ openstack overcloud plan create deleteme
Started Mistral Workflow tripleo.plan_management.v1.create_default_deployment_plan. Execution ID: ae88e04a-f86c-422f-aa37-6547a645f6c7

{u'status': u'SUCCESS', u'message': None}
Default plan created
---------------------------------------------

"{u'status': u'SUCCESS', u'message': None}" shouldn't be displayed. In general since we added support for receiving multiple messages (bug 1646887) there are extra newlines appearing in many of the commands (this one too, deploy can be pretty noticeable as well) for empty messages which we should ignore rather than push to the user.

[Julie Pichon (jpichon)]

The dictionaries have disappeared from the command mentioned in the description, closing.

$ openstack overcloud plan create test
Started Mistral Workflow tripleo.plan_management.v1.create_deployment_plan. Execution ID: cadd0a39-f047-429d-a06b-c6914385b321
Plan created.
Default plan created