Allow passing config options to Kafka producer

The change allows passing supported options as dictionary to create a
Kafka producer object.

Change-Id: I7627a8caa2d6bb9c7789df143e72a4085060b164
Story: 2006059
Task: 37531

monasca_common/confluent_kafka/producer.py

@@ -22,16 +22,17 @@ log = logging.getLogger(__name__)
 class KafkaProducer(object):
     """Wrapper around asynchronous Kafka Producer"""
 
-    def __init__(self, bootstrap_servers):
+    def __init__(self, bootstrap_servers, **config):
         """
         Create new Producer wrapper instance.
 
         :param str bootstrap_servers: Initial list of brokers as a CSV
         list of broker host or host:port.
+        :param config Configuration properties
         """
 
-        self._producer = confluent_kafka.Producer({'bootstrap.servers':
-                                                   bootstrap_servers})
+        config['bootstrap.servers'] = bootstrap_servers
+        self._producer = confluent_kafka.Producer(config)
 
     @staticmethod
     def delivery_report(err, msg):

monasca_common/kafka/client_factory.py

@@ -49,8 +49,8 @@ def get_kafka_consumer(kafka_url,
         )
 
 
-def get_kafka_producer(kafka_url, use_legacy_client=False):
+def get_kafka_producer(kafka_url, use_legacy_client=False, **config):
     if use_legacy_client:
         return legacy_kafka_producer.KafkaProducer(kafka_url)
     else:
-        return producer.KafkaProducer(",".join(kafka_url))
+        return producer.KafkaProducer(",".join(kafka_url), **config)