We have no codepaths that currently set v2password plugin by default.
However, there are some cases, such as old clouds, where a user needs
to explicitly set v2password as the auth_type to avoid version discovery
because their cloud is old enough to not support it. If the user
sets v2password, keep it and align the auth parameters the other
direction to set tenant_name and tenant_id.
Co-Authored-By: David Shrewsbury <shrewsbury.dave@gmail.com>
Change-Id: Ib9eb3ae163b79b67737d01868868187b6dee1756