tests: fix newly failing tests

* Flake8 and pep8 are now recognizing an additional error and prospector
  has an issue with the version of vulture shipped.

Change-Id: Ie3fe9158feab1ff32ee1c5e066c5dae4917a24a1

cumin/tests/vulture_whitelist.py

@@ -25,5 +25,5 @@ def __getattr__(self, _):
 whitelist_tests_integration_conftest.pytest_cmdline_preparse
 whitelist_tests_integration_conftest.pytest_runtest_makereport
 
-whitelist_tests_integration_test_cli_TestCLI = Whitelist()
+whitelist_tests_integration_test_cli_TestCLI = Whitelist()  # noqa: N816
 whitelist_tests_integration_test_cli_TestCLI.setup_method

setup.py

@@ -31,7 +31,8 @@
         'bandit>=1.5.1',
         'flake8>=3.6.0',
         'flake8-import-order>=0.18.1',
-        'prospector[with_everything]>=1.1.7',
+        # Temporary upper constraint until https://github.com/PyCQA/prospector/issues/389 is fixed
+        'prospector[with_everything]>=1.1.7,<=1.2.0',
         'pytest-cov>=2.6.0',
         'pytest-xdist>=1.26.1',
         'pytest>=3.10.1',