Make common methods threading safe. pytest enhancements

Change-Id: Iaacf38c9bb9c31fc521cbde48acd0d6a9cb9a56d
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/osm_common/__init__.py b/osm_common/__init__.py
index 1c60968..81567f8 100644
--- a/osm_common/__init__.py
+++ b/osm_common/__init__.py
@@ -15,6 +15,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-version = '0.1.11'
+version = '0.1.12'
 # TODO add package version filling commit id with 0's; e.g.:  '5.0.0.post11+00000000.dirty-1'
-date_version = '2018-10-23'
+date_version = '2018-11-05'