cache,server: add stream scoped routes#477

ZIK-1337 wants to merge 2 commits intoenvoyproxy:mainenvoyproxy/java-control-plane:mainfrom

ZIK-1337:add-scoped-routes-to-snapshotZIK-1337/java-control-plane:add-scoped-routes-to-snapshotCopy head branch name to clipboard