Tracking issue for adding cluster-name to metasrv

[drmingdrmer]

The following task to enable cluster-name check:

• Cluster name has to be persisted in storage.
• The implementation of RaftNetwork has to send cluster-name in every request.
• Raft RPC handler has to check the cluster-name before handling an RPC.
• Non-raft RPC should send cluster-name to the remote peer too.
• Non-raft RPC has to check the cluster-name before handling an PRC.

Originally posted by @drmingdrmer in #5740 (comment)