Add support for the auth-version to be specified using
--os-identity-api-version or OS_IDENTITY_API_VERSION
for compatibility with other openstack client command
line options.
The auth version used will be selected as follows:
- if either --auth-version or --os-identity-api-version
is set, use that value
- otherwise use the value of ST_AUTH_VERSION, if set
- otherwise use the value of OS_AUTH_VERSION, if set
- otherwise (new behaviour) use the value of
OS_IDENTITY_API_VERSION, if set
- otherwise default to 1.0
Note that before this change the auth version might have
defaulted to 1.0 despite OS_IDENTITY_API_VERSION being set,
but with this change OS_IDENTITY_API_VERSION is preferred.
Change-Id: Ifba4c4e43560ede3013337b8cdbc77dc2de6e8ff
Closes-Bug: #1541273
d6ef83021e