[store] refactor: remove RaftState::write_snapshot_meta().

[drmingdrmer]

I hereby agree to the terms of the CLA available at: https://datafuse.rs/policies/cla/

Summary

[store] refactor: remove RaftState::write_snapshot_meta().

It is a bad idea to work around the problem that state machine does not
save membership config.
Solving the problem where it is introduced saves a lot troubles.
I should not have ever tried.
The better solution is: #1479

Changelog

• Improvement

Related Issues

• FuseStore v0.1  #271
• [store] impl sled db backed raft-state-machine. #1080

[databend-bot]

Thanks for the contribution!
I have applied any labels matching special text in your PR Changelog.

Please review the labels and make any necessary changes.

[databend-bot]

Thanks for the contribution!
I have applied any labels matching special text in your PR Changelog.

Please review the labels and make any necessary changes.

[databend-bot]

Thanks for the contribution!
I have applied any labels matching special text in your PR Changelog.

Please review the labels and make any necessary changes.

[codecov-commenter]

Codecov Report

Merging #1482 (9b08859) into master (b6ba0b3) will decrease coverage by 0%.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #1482   +/-   ##
======================================
- Coverage      73%     73%   -1%     
======================================
  Files         506     506           
  Lines       29987   29924   -63     
======================================
- Hits        21931   21869   -62     
+ Misses       8056    8055    -1     

Impacted Files	Coverage Δ
store/src/meta_service/raft_state.rs	90% <ø> (-2%)	⬇️
store/src/meta_service/raft_state_kv.rs	64% <ø> (-2%)	⬇️
store/src/meta_service/raft_state_test.rs	98% <ø> (+1%)	⬆️
query/src/api/http/v1/cluster.rs	83% <0%> (-4%)	⬇️
store/src/meta_service/network.rs	46% <0%> (-2%)	⬇️
store/src/meta_service/raftmeta.rs	78% <0%> (-1%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update b6ba0b3...9b08859. Read the comment docs.

[databend-bot]

CI Passed
Reviewer Approved
Let's Merge