Ignore D106 and D107 for flake8 tests.
Ignore D106 and D107 for flake8 tests.

Two new error codes were added in pydocstyle as of version 2.1.0.
These D106 and D107, and are variations on codes D101 and D102,
which we are ignoring.

girder/girder_worker,girder/girder_worker,girder/girder_worker