[S-RBAC] Switch to new policies by default

This patch changes "-new-defaults" scenario job to be "-old-defaults"
now because [1] changes Neutron to use new defaults by default so all
other scenario jobs will cover that.

[1] https://review.opendev.org/c/openstack/neutron/+/879827

Depends-On: https://review.opendev.org/c/openstack/neutron/+/879827
Change-Id: Ief16ae0f6a47a98a8e237dfc76f99aad6bb41b98
2 files changed