[tests] Add tests to ensure help output

In the past, there have been otherwise trivial typos and the like that
have caused `--help` output to be unreliable. In the case of "help
options" such as `--list-plugins` this also includes potentially
unavailable detailed information about whatever is being listed.

These tests are sanity checks to ensure that changes aren't regressing
this behavior and that the informational output options, and `--help`
directly, continue to provide the right output.

Signed-off-by: Jake Hunsaker <jhunsake@redhat.com>

0 files changed, 0 insertions, 0 deletions