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/tests/test_fsmongo.py b/osm_common/tests/test_fsmongo.py
index da01ff3..01a8ef2 100644
--- a/osm_common/tests/test_fsmongo.py
+++ b/osm_common/tests/test_fsmongo.py
@@ -16,23 +16,20 @@
 # contact: eduardo.sousa@canonical.com
 ##
 
-import logging
-import pytest
-import tempfile
-import tarfile
-import os
-import subprocess
-
-from pymongo import MongoClient
-from gridfs import GridFSBucket
-
 from io import BytesIO
-
+import logging
+import os
+from pathlib import Path
+import subprocess
+import tarfile
+import tempfile
 from unittest.mock import Mock
 
+from gridfs import GridFSBucket
 from osm_common.fsbase import FsException
 from osm_common.fsmongo import FsMongo
-from pathlib import Path
+from pymongo import MongoClient
+import pytest
 
 __author__ = "Eduardo Sousa <eduardo.sousa@canonical.com>"