Fix SensorMap lookups for cases where loadCache() has not been called before

lib/src/sensorconfig.cpp

@@ -767,8 +767,9 @@ SCError SensorConfigImpl::getPublicSensorByName(PublicSensor& sensor, const char
           sensor.frequency = frequency;
 
           /* Add to sensorPropertyCache for later use */
-	  sensorMapByName.insert(std::make_pair(publicName, std::ref(sensor)));
-	  sensorMapByPattern.insert(std::make_pair(sensor.pattern, std::ref(sensor)));
+	  sensorList.push_back(sensor);
+	  sensorMapByName.insert(std::make_pair(publicName, std::ref(sensorList.back())));
+	  sensorMapByPattern.insert(std::make_pair(sensor.pattern, std::ref(sensorList.back())));
       }
       else {
           cass_result_free(result);