lint: flag optparse as deprecated

We want people to use chromite.lib.commandline or at least argparse.
Mark optparse as deprecated so people won't write new code with it.

TEST=`cros lint` doesn't show any new warnings (after adding markers)

Change-Id: Iaf295e711b5e855e80b7a084765d19b4f5118fb9
Commit-Ready: Mike Frysinger <>
Tested-by: Mike Frysinger <>
Reviewed-by: Mike Frysinger <>
9 files changed