
Horizon test setting no longer depends on nose and related stuffs. This commit cleans up nose related dependencies. The change was made in horizon Rocky-3, so horizon 14.0.0.0b3 is required at least. Also drops unnecessary Django dependencies. There is no need to install Django explicitly as it is a horizon dependency. Change-Id: I4c27c5a330976637b43831b6748465c518926bb5