when doing openstack identity provider list --name xyz_id,
and openstack identity provider list --enabled CLI raising
error unrecognized arguments, whereas in api-ref document [1],
user can pass name and enabled as optional query param. This
addresses the above issue, by adding param --id and --enabled in
parser of ListIdentityProvider.
[1] https://docs.openstack.org/api-ref/identity/v3-ext/?expanded=list-identity-providers-detail#list-identity-providers
Change-Id: I59ce3a5f54700ba5a735f0b3b4b3b73b3a8658fa