Adding release notes and enabling import order check

Enabling Flake8 library import order check,
adding release_notes, enabling stage-test failing by tox results.

Change-Id: I490b4cb3fe5904f54d84f0ce9b41fe91ec8b4f5d
Signed-off-by: aticig <gulsum.atici@canonical.com>
diff --git a/osm_common/msgkafka.py b/osm_common/msgkafka.py
index 5caa5b1..5487093 100644
--- a/osm_common/msgkafka.py
+++ b/osm_common/msgkafka.py
@@ -13,13 +13,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import logging
 import asyncio
-import yaml
+import logging
+
 from aiokafka import AIOKafkaConsumer
 from aiokafka import AIOKafkaProducer
 from aiokafka.errors import KafkaError
 from osm_common.msgbase import MsgBase, MsgException
+import yaml
 
 __author__ = (
     "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>, "