Currently the barbican client library can take parameters necessary for
keystone to give a proper endpoint given certain options. these options
could be 'service type', 'service name', 'region name', 'interface' and
'version'. These options, however, were not available from the CLI. So
the user would be stuck with the default options; which are not really
useful if you're trying to access the barbican instance from another
region.
This CR enables such options for the CLI also.
Change-Id: I66f9ec4d1330297c11bad0336decef5465a80cc3
d6ae7b064d