Add a test for false positive no-member in subclassed dataclasses

Closes #3754

Author: Pierre-Sassoulas

tests/functional/n/no/no_member_subclassed_dataclasses.py

@@ -0,0 +1,40 @@
+from abc import ABCMeta, abstractmethod
+import dataclasses as dc
+from typing import Any, Dict
+
+@dc.dataclass(frozen=True)
+class DeploymentState(metaclass=ABCMeta):
+    type: str
+
+    @abstractmethod
+    def to_dict(self) -> Dict:
+        """
+        Serializes given DeploymentState instance to Dict.
+        :return:
+        """
+
+@dc.dataclass(frozen=True)
+class DeploymentStateEcs(DeploymentState):
+    blue: Any
+    green: Any
+    candidate: Any
+
+    def to_dict(self) -> Dict:
+        return {
+            'type': self.type,
+            'blue': dc.asdict(self.blue),
+            'green': dc.asdict(self.green),
+            'candidate': self.candidate.value,
+        }
+
+@dc.dataclass(frozen=True)
+class DeploymentStateLambda(DeploymentState):
+    current: Any
+    candidate: Any
+
+    def to_dict(self) -> Dict:
+        return {
+            'type': self.type,
+            'current': dc.asdict(self.current),
+            'candidate': dc.asdict(self.candidate) if self.candidate else None,
+        }

tests/functional/n/no/no_member_subclassed_dataclasses.rc

@@ -0,0 +1,10 @@
+[testoptions]
+min_pyver=3.7
+
+[MESSAGES CONTROL]
+disable=fixme,
+    logging-too-many-args,
+    logging-fstring-interpolation,
+    missing-docstring,
+    no-else-return,
+    too-few-public-methods,