Fix CI failures: mark integration test and resolve mypy attr-defined errors

Add @pytest.mark.integration to test_createSimulations so it is skipped
in CI where no STOMP broker is available. Fix mypy attr-defined errors
in field_proxy_forwarder.py by extracting mRID with a type ignore.

Author: craig8

gridappsd-field-bus-lib/gridappsd_field_bus/field_interface/field_proxy_forwarder.py

@@ -103,8 +103,9 @@ def __init__(self, connection_url: str, username: str, password: str, mrid: str)
         self.network.get_all_edges(cim.Substation)
 
         for substation in self.network.graph.get(cim.Substation, {}).values():
-            print(f"Subscribing to Substation: /topic/goss.gridappsd.field.{substation.mRID}")
-            self.ot_connection.subscribe("/topic/goss.gridappsd.field." + substation.mRID, self.on_message_from_ot)
+            mrid = substation.mRID  # type: ignore[attr-defined]
+            print(f"Subscribing to Substation: /topic/goss.gridappsd.field.{mrid}")
+            self.ot_connection.subscribe("/topic/goss.gridappsd.field." + mrid, self.on_message_from_ot)
 
         # self.ot_connection.subscribe(topics.BASE_FIELD_TOPIC, self.on_message_from_ot)
 

gridappsd-python-lib/tests/test_simulation.py

@@ -24,6 +24,7 @@ def createGadObject():
        os.environ['GRIDAPPSD_PASSWORD'] = 'manager'
    return GridAPPSD()
 
+@pytest.mark.integration
 def test_createSimulations(createGadObject):
    gadObj = createGadObject
    response = gadObj.query_model_info()