deploy: Add command line arguments to local deploy script.

Added options:
  --skip-verify  Skip the verification that the current repo is clean.
  --skip-update  Skip updating the current repo.
  --skip-actions Skip running the post update actions.
  --skip-report  Skip the final report of the repo's versions.
  --dryrun       Don't run any commands, just report what would run.

BUG=chromium:425636
TEST=pylint + unittests + some manual testing.

Change-Id: I4cea9643165bd4f43389baba117b39fd832b125f
Reviewed-on: https://chromium-review.googlesource.com/230934
Tested-by: Don Garrett <dgarrett@chromium.org>
Reviewed-by: Richard Barnette <jrbarnette@chromium.org>
Commit-Queue: Don Garrett <dgarrett@chromium.org>
2 files changed