This is split out from 

https://bugzilla.redhat.com/show_bug.cgi?id=1396227

Provide a description of changes that will be made and the end result when deploy and update operations are invoked

For director operations which will change the overcloud configuration, provide a report of changes that will be made and why, and then the overall result against these changes when complete. 


Provide a --dry-run flag  which would report on syntax and planned changes

For director operations which will change the overcloud configuration,  provide a dry-run flag whuch report of changes that will be made and why and any errors in syntax and arguments.