test file glob

We have varying naming conventions for test file names.

coala and bears use *Test.py . This is partly because it uses non-PEP8 compliant module names, which should always be snake case.

corobo uses *_test.py

community uses test_*.py

mobans uses *Test.py but it doesnt look right, and should be switched to be PEP8 compliant module names.

I think it would be inappropriate to force coala and bears to use *_test.py or test_*.py, and also inappropriate to force PEP8 compliant test module names to adopt non-compliant *Test.py.

Especially django projects which according to the docs should use test*.py

Rather than force consistency one way or the other, I think it is better to have a variable here.