nose is not actively maintained now and Django default test runner
seems to have enough features.
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.
And murano-dashboard using unittest instead of testtools.
Co-Authored-By: Akihiro Motoki <amotoki@gmail.com>
Change-Id: I419e0e166ea88c3ab1203f35ffa00928cf94acb1
Depends-On: https://review.openstack.org/599156/
4985bfa010