In a future diff I want to replace the pytest framework with the regular the unittest module for functional tests (electrumabc/tests/regtest/), but we don't want these functional tests to be found and executed by the unit test runner. They will need to run with their own framework, with a node compiled...etc
Add a simple filter class to skips all tests that contain "regtest" in their fully qualified module name (e.g electrumabc.tests.regtest.test_rpc_misc)