Delete and rename integration tests for pytest conversion.
Delete and rename unit tests for pytest conversion.
Fix drivers for pytest and flake8.
Fix test_drivers for pytest and flake8.
Fix failing testCallback.
Fix test_monitor for pytest and flake8.
Fix test_replay for pytest and flake8.
Fix test_state for pytest and flake8.
Fix test_dbclient for pytest and flake8.
Move back drivers.py, used by unit AND integration tests.
Mark currently failing tests for investigation in a later PR.
Re-enable travis build and enable travis flake8 of fs tests.
Merge pull request #3038 from ximenesuk/enable-fs-tests

Re-enable fs tests