add new authz policy for registry

General MR

Summary

Fixes cypress test failures arising from the inability of the Harbor core component to forward requests to registry, due to headers from the original ingressgateway being stripped during a token exchange.

Relevant logs/screenshots

(Include any relevant logs/screenshots)

Linked Issue

N/A (quickfix) Related to big-bang/bigbang#1973 (closed)

Upgrade Notices

N/A