Include init files in sybil (#96)

Author: Marenz

src/frequenz/client/conftest.py

@@ -10,4 +10,9 @@
 from frequenz.repo.config.pytest import examples
 from sybil import Sybil
 
-pytest_collect_file = Sybil(**examples.get_sybil_arguments()).pytest()
+sybil_arguments = examples.get_sybil_arguments()
+# Upstream includes "excludes" to work around a bug in Sybil.
+# This bug seems to be fixed in our version of Sybil, so we remove it.
+sybil_arguments.pop("excludes")
+
+pytest_collect_file = Sybil(**sybil_arguments).pytest()