All modules of novaclient.v2.contrib have been removed.
The 'only_contrib' parameter for the
'novaclient.client.discover_extensions' method is no longer valid.
Change-Id: I6da83057dda1f27afe98a2412bc0815f100f34a4
All extensions from novaclient.v2.contrib should be not be extensions in
case of api version >=2.0;<=3.0 (historically, they are turned on by default
for cli layer), so let's move it from contrib dir and turn on by default.
Change-Id: I4ef4e44cf970947dad33110ce658a133e4f2893e
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