Fixes incorrect deprecation warning for IdentityDriverV8
Fixes incorrect deprecation warning for IdentityDriverV8

This patch fixes incorrect deprecation warning for IdentityDriver8, as
it was merged in NEWTON and not MITAKA.

Closes-Bug: #1569814

Change-Id: I4fd3b7bf28c35791ff4d14d4226e2a29a1243a0f

ilay09/keystone,openstack/keystone,mahak/keystone,ilay09/keystone,rajalokan/keystone,rajalokan/keystone,mahak/keystone,rajalokan/keystone,openstack/keystone,cernops/keystone,ilay09/keystone,openstack/keystone,mahak/keystone,cernops/keystone