Fix cros_workon parameter order.

After chromite commit 1341bdd "cros_workon: drop shared parser logic",
cros_workon requires options to go before commands.

BUG=None
TEST=Using gmerge to install a package on a device works again.

Change-Id: I8a99acc78179d09e5d950cd1dd0e2404229a603d
Reviewed-on: https://chromium-review.googlesource.com/615172
Commit-Ready: Mattias Nissler <mnissler@chromium.org>
Tested-by: Mattias Nissler <mnissler@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
1 file changed