Address issues in all files in the 'openstack' directory as well as the
'openstack/common', 'openstack/config' and 'openstack/test' directories.
With this done, we can start introducing mypy iteratively.
Note that we disable type hints in Sphinx. This is necessary because
Sphinx apparently can't tell the difference between 'Type' from 'typing'
and 'Type' from 'openstack.block_storage.v[23].Type', which causes a
build warning. This is okay since typing makes docs too noisy anyway.
Change-Id: Ia91c5da779b5b68c408dfc934a21d77e9ca2f550
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
2a8627d4f1