*: make TestMember stable

[rleungx]

Signed-off-by: Ryan Leung rleungx@gmail.com

What problem does this PR solve?

Issue Number: Close #5714

What is changed and how does it work?

Check List

Tests

• Unit test

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• JmPotato

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[codecov]

Codecov Report

Base: 75.69% // Head: 75.79% // Increases project coverage by +0.10% 🎉

Coverage data is based on head (23a83ea) compared to base (7f2e8ad).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5715      +/-   ##
==========================================
+ Coverage   75.69%   75.79%   +0.10%     
==========================================
  Files         329      329              
  Lines       32695    32695              
==========================================
+ Hits        24749    24782      +33     
+ Misses       5817     5791      -26     
+ Partials     2129     2122       -7     

Flag	Coverage Δ
unittests	75.79% <ø> (+0.10%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
server/schedulers/shuffle_hot_region.go	56.00% <0.00%> (-10.00%)	⬇️
server/storage/storage.go	67.30% <0.00%> (-3.85%)	⬇️
pkg/dashboard/adapter/manager.go	77.01% <0.00%> (-2.30%)	⬇️
server/storage/endpoint/meta.go	61.36% <0.00%> (-2.28%)	⬇️
server/encryptionkm/key_manager.go	70.11% <0.00%> (-1.60%)	⬇️
server/schedulers/evict_leader.go	78.57% <0.00%> (-0.90%)	⬇️
server/cluster/coordinator.go	72.00% <0.00%> (-0.58%)	⬇️
server/grpc_service.go	49.63% <0.00%> (-0.17%)	⬇️
server/tso/local_allocator.go	71.62% <0.00%> (ø)
server/region_syncer/client.go	86.56% <0.00%> (ø)
... and 13 more

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[JmPotato]

/merge

[ti-chi-bot]

@JmPotato: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 23a83ea