services/mgmt/lib/acls: restructure the hierarchical authorizer for use by debug

The debug implementation uses the same authorizer over the lifetime of
the service. Modify the hierarchical authorizer to support monitoing
permission lists dynamically instead of requiring the creation of a
new Authorizer in each Lookup call.

Change-Id: Ibe86bf0bb7578defc6d24a902048246f67f515db
1 file changed