This is an old carry over from pre-testtools days and has a nose import.
Nothing is using it so remove it.
Closes-Bug: #1458272
Change-Id: I01b5d35d2e2aec161bd3dbaecb4670ddf3ee8794
Module novaclient.v1_1 is used as implementation of V1.1, V2 and V3.
Since future development(microversioning) will be done across V2,
implementation should be done in appropriate module(to prevent misleading).
Despite the fact that implementation for all versions are equal, discover
method for contrib path worked only for v1.1. This patch fixes this bug and
modifies shell tests to check all versions.
Change-Id: Ib6798f4dfe177586302141f522dc593560ce6a5b