Formtat output for stdout when reporting from a CLI interface

[bryantbiggs]

Use case

As a user who uses the CLI to analyze their cluster for upgrade readiness, I want to have the results formatted so that I can quickly and easily understand what checks have passed or failed

Solution/User Experience

A tabular format is commonly used in this scenario, provide the number of columns are kept to a minimum to fit within a 120 character width windwo

Alternative solutions

JSON format - this will also be supported but is not as readable as a table and is intended more for machines rather than users