Try to fix issues on Travis

Author: jpadilla

tests/conftest.py

@@ -3,8 +3,11 @@ def pytest_configure():
 
     settings.configure(
         DEBUG_PROPAGATE_EXCEPTIONS=True,
-        DATABASES={'default': {'ENGINE': 'django.db.backends.sqlite3',
-                               'NAME': ':memory:'}},
+        DATABASES={
+            'default': {
+                'ENGINE': 'django.db.backends.sqlite3'
+            }
+        },
         SECRET_KEY='r-4p2y=uc56fmqsncog%3h!7hc=y+g)xtz+9y(prx*1o9dpry0',
         USE_I18N=True,
         USE_L10N=True,