Fix black and cover errors

Change-Id: I1c7fb47a94ac0ce99c5b6fffb44aca3d80cd3842
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 6e5a633..3f809e8 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -14,9 +14,9 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #######################################################################################
--e git+https://osm.etsi.org/gerrit/osm/N2VC.git@master#egg=n2vc
+-e git+https://osm.etsi.org/gerrit/osm/N2VC.git@v13.0#egg=n2vc
     # via -r requirements-dev.in
--e git+https://osm.etsi.org/gerrit/osm/common.git@master#egg=osm-common
+-e git+https://osm.etsi.org/gerrit/osm/common.git@v13.0#egg=osm-common
     # via -r requirements-dev.in
 aiokafka==0.7.2
     # via -r https://osm.etsi.org/gitweb/?p=osm/common.git;a=blob_plain;f=requirements.txt;hb=v13.0