Add test which fails

```
================================================================ short test summary info =================================================================
FAILED test/test_task.py::test_task_can_be_scheduled_by_luigi - luigi.worker.TaskException: Task of class DummyK8sTask not initialized. Did you override __init__ and forget to call super(...).__init__?
======================================================== 1 failed, 18 passed, 1 warning in 1.69s =========================================================
nox > Command pytest  failed with exit code 1

```

Author: psolomin

test/test_task.py

@@ -0,0 +1,21 @@
+from typing import Any, Dict
+
+import luigi
+
+from kubeluigi import KubernetesJobTask
+
+
+class DummyK8sTask(KubernetesJobTask, luigi.Task):
+    @property
+    def name(self) -> str:
+        return "dummy-tsk"
+
+    def spec_schema(self) -> Dict[str, Any]:
+        return {}
+
+    def run(self):
+        pass
+
+
+def test_task_can_be_scheduled_by_luigi():
+    luigi.build([DummyK8sTask()], local_scheduler=True, log_level="WARNING")