We are adding a subcommand to tempest that is a parser for subunit
streams to determine what REST API calls are made inside of a test
and in what order they are called. Right now the implementation of
utility is as a console script and which is in argparse.
We are porting it to cliff to give a similar experience across
the codebase.
Change-Id: If95042898d8b2a148246c991d73d1a577fbcf7a0
Signed-off-by: Soniya Vyas <svyas@redhat.com>