update proxy of master to raftstore-proxy-6.2 by proxy pr 174

[CalvinNeo]

What problem does this PR solve?

Issue Number: ref #4982

Problem Summary:
update proxy to raftstore-proxy-6.2
Proxy PR:
pingcap/tidb-engine-ext#174
Including:\nSubmodule contrib/tiflash-proxy 7e2e6374b..ac4614fdf:

Fix proxy config (#174)
Fix SST thread not taking effect (#173)

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• breezewish
• hehechen

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[breezewish]

/run-all-tests

[CalvinNeo]

/run-all-tests

[CalvinNeo]

/merge

[ti-chi-bot]

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

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

If you have any questions about the PR merge process, please refer to pr process.

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[ti-chi-bot]

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

Commit hash: c395d93

[sre-bot]

Coverage for changed files

no c/c++ source change detected

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
18866      8119             56.96%    219532  83572        61.93%

full coverage report (for internal network access only)

[CalvinNeo]

/run-integration-test

[breezewish]

/run-integration-test tidb=pr/37912 pd=master tikv=master

[sre-bot]

Coverage for changed files

no c/c++ source change detected

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
18863      8115             56.98%    219484  83513        61.95%

full coverage report (for internal network access only)

[ti-chi-bot]

@CalvinNeo: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[breezewish]

/run-unit-test

[sre-bot]

Coverage for changed files

no c/c++ source change detected

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
18863      8116             56.97%    219544  83652        61.90%

full coverage report (for internal network access only)

[ti-chi-bot]

In response to a cherrypick label: failed to apply #5944 on top of branch "release-6.1":

[failed to git add conflicting files: exit status 128, failed to git commit: exit status 128]