Fix E402 (module level import not at top of file) pep8 errors
and no longer ignore new failures.
Trivialfix
Change-Id: If9a202f1f322b5b03966c692e33e94b7c872079b
We hit a problem that Neutron migrations cannot be applied
on galera cluster with ENFORCING mode as alembic_version table
missing primary key on the table and it is expected that all tables
will have primary keys.
alembic_version is created and managed by Alembic and fixes for this
on Alembic side are on the review [1]. Anyway here migration is
proposed that will add pk on this table if it is missing, as in
other case we will have inconsistency between new deployments and
old ones.
[1] - https://gerrit.sqlalchemy.org/#/c/279/
Change-Id: I543a1ee286bdf11ae35adb87125d044a351a2648
Closes-bug: #1655610
Brian Haley