Add the "message" subcommand to the gerrit command line tool

This allows placing a message into the gerrit CL with the "message"
command.

BUG=chromium:254515
TEST=From command line, try:
  gerrit message 32556 "testing 1, 2, 3. \" \\ '"
See this added to gerrit:
  testing 1, 2, 3. " \ '

Change-Id: I667ba1791f16b4ec29612ba3efb2a7dbc3cb22f2
Signed-off-by: Doug Anderson <dianders@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/62776
Reviewed-by: David James <davidjames@chromium.org>
1 file changed