Fix vca_config parameter for N2VC.
Fix unittests.
Provide hostname/username for native charms

Change-Id: I19f740a4053b9f1aa738f373450a907e7e7d9078
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>
diff --git a/tox.ini b/tox.ini
index 5896bfc..de33e96 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,7 +14,7 @@
 # limitations under the License.
 
 [tox]
-envlist = py3
+envlist = flake8, unittest
 toxworkdir={homedir}/.tox
 
 [testenv]