Read request time consuming becoming longer when standby master restart or exit

[microbn]

Alluxio Version:
What version of Alluxio are you using?
2.9.3
Describe the bug
A clear and concise description of what the bug is.
Client will retry create new connection when rpc invoker. when new connection may connect to corrupt standby master， then versionClient request timeout and shutdown channel will gracefully then forcefully, this will consume long time.

To Reproduce
Steps to reproduce the behavior (as minimally and precisely as possible)

Expected behavior
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standby master exist not has any impact to client request.

Urgency
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Are you planning to fix it
Please indicate if you are already working on a PR.
YES
Additional context
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