Fix bug 576 about ssh keys

Change-Id: I69f73e6ce201e6e46804624271b9183ac2bbfc98
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/tox.ini b/tox.ini
index 707a451..3a6de1a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,7 @@
 basepython = python3
 deps = flake8
 commands = flake8 osm_nbi/ setup.py --max-line-length 120 \
-    --exclude .svn,CVS,.gz,.git,__pycache__,.tox,local,temp,vnfd_catalog.py,nsd_catalog.py --ignore W291,W293,E226,E402,W504
+    --exclude .svn,CVS,.gz,.git,__pycache__,.tox,local,temp,osm_im --ignore W291,W293,E226,E402,W504
 
 [testenv:build]
 basepython = python3