[tests] pylint E041 failures for ddt and mock

[Tom Barron]

When a git commit includes changes to manila test code it typically has E401 failures claiming
that ddt and mock cannot be imported. For example:

2019-01-23 19:20:57.403442 | ubuntu-xenial | Running pylint against:
2019-01-23 19:20:57.403635 | ubuntu-xenial | manila/manager.py
2019-01-23 19:20:57.403703 | ubuntu-xenial | manila/service.py
2019-01-23 19:20:57.403773 | ubuntu-xenial | manila/share/driver.py
2019-01-23 19:20:57.403874 | ubuntu-xenial | manila/share/drivers/service_instance.py
2019-01-23 19:20:57.403943 | ubuntu-xenial | manila/share/manager.py
2019-01-23 19:20:57.404062 | ubuntu-xenial | manila/tests/share/drivers/test_service_instance.py
2019-01-23 19:20:57.404152 | ubuntu-xenial | manila/tests/share/test_manager.py
...
2019-01-23 19:21:15.383441 | ubuntu-xenial | manila/tests/share/drivers/test_service_instance.py:22:0: E0401: Unable to import 'ddt' (import-error)
2019-01-23 19:21:15.383699 | ubuntu-xenial | manila/tests/share/drivers/test_service_instance.py:23:0: E0401: Unable to import 'mock' (import-error)

Although warnings that modules cannot be imported are valuable, these are spurious. We know that they can and are imported and used by our test code.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/632992

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/632992
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=1838d519257aaa7127b71ff93be7e49946673025
Submitter: Zuul
Branch: master

commit 1838d519257aaa7127b71ff93be7e49946673025
Author: Tom Barron <email address hidden>
Date: Thu Jan 24 07:38:45 2019 -0500

    Fix spurious pylint import errors for ddt and mock

    Set dependencies correctly for pylint job in tox.ini so
    it does not report spurious E041 import errors on mock
    and ddt modules. Also fix a reference to Cinder instead
    of Manila in the pylint script.

    Closes-Bug: #1813156
    Change-Id: Ib160caae57e41a4d45483ff4faa599143e694abc

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/manila 8.0.0.0rc1 release candidate.