Implement secure RBAC for share replicas
Implement secure RBAC for share replicas

This commit updates the policies for share
replicas 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: I1656585bf66ad17468e5d2cfef039fc90b6dec50
Signed-off-by: Goutham Pacha Ravi <23768c94a9ff9c3948f2b1373d75b7bec9121063@gmail.com>

openstack/manila,openstack/manila