[LI-HOTFIX] Add list federated topic znodes rpc #493
Merged
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This PR adds list federated topic znodes rpc that either list all federated topic znodes, or only given federated topic znodes matching the input simple topic names.
LI_DESCRIPTION =
To make all zk access go through kafka broker, in addition to the previous create/delete federated topic znodes rpcs, we also need to add read/list federated topic znodes rpc.
Added integ-test to verify list federated topic znode api
EXIT_CRITERIA = We can deprecate this pr when all kafka clients have been migrated to xinfra clients and all topic CUDs go through xmd, then we don't need kafka broker to understand both old and new topic acl, it will only need to understand the new acl.
Committer Checklist (excluded from commit message)