Pep8 job currently fails complaining about I202 in a bunch of
modules. This change fixes the genuine errors in the module
import order, and adds I202 to the skip list so that we don't
have to add noqa comments everywhere we can not satisfy the
check. After we split out the tempest plugin, we'll remove
I202 from the ignore list and add noqa comments in the places
where it will still be needed.
Change-Id: Ia170a41d35dea8c9eda2b36c907dbc518169a824
e0514cb85b