Implement secure RBAC for security services
Implement secure RBAC for security services

This commit updates the policies for security services
to understand scope checking and account for a read-only
role. This is part of a broader series of changes across
OpenStack to provide a consistent RBAC experience and
improve security.

Change-Id: I399a61691dad3a80c289c9f3f99f3c48be07846f
Signed-off-by: Goutham Pacha Ravi <23768c94a9ff9c3948f2b1373d75b7bec9121063@gmail.com>

openstack/manila,openstack/manila