[RFC PATCH 08/16] patman: Add a 'test' subcommand

[Simon Glass]

At present we use --test to indicate that tests should be run. It is
better to use a subcommand for list, like binman. Change it and adjust
the existing code to fit under a 'send' subcommand, the default.

Give this subcommand the same default arguments as the others.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 .azure-pipelines.yml      |  2 +-
 .gitlab-ci.yml            |  2 +-
 .travis.yml               |  2 +-
 test/run                  |  2 +-
 tools/patman/main.py      | 75 +++++++++++++++++++++------------------
 tools/patman/test_util.py |  2 +-
 6 files changed, 45 insertions(+), 40 deletions(-)

Applied to u-boot-dm