Reasons:
- When using table-based design for CLI output, the full traceback of failed
test could not be shown comfortably due to long text lines
- User who runs CLI does not need the full traceback about passing tests in
some cases
Changes:
- Added option "--verbose" that tells CLI to show up test report in output
(by default is False)
- Added option "--no-format" that allows to print output without table markup
- Moved functionality of printing results from validation plugins to CLI
Implements blueprint: cli-format-output
Change-Id: I919e88cb640031043fdbf5a17260e24249f6508f
ca2fe0c554