Fix the issue tiflash metric server listen on incorrect addr when ipv6 enabled

[KanShiori]

What problem does this PR solve?

What is changed and how does it work?

Code changes

• Has Go code change
• Has CI related scripts change

Tests

• Unit test
• E2E test
• Manual test
• No code

Side effects

• Breaking backward compatibility
• Other side effects:

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation

Release Notes

Please refer to Release Notes Language Style Guide before writing the release note.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• hanlins

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After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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[codecov-commenter]

Codecov Report

Merging #4889 (8dc467f) into master (babb7d8) will increase coverage by 8.41%.
The diff coverage is 25.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4889      +/-   ##
==========================================
+ Coverage   59.36%   67.78%   +8.41%     
==========================================
  Files         226      230       +4     
  Lines       25717    28798    +3081     
==========================================
+ Hits        15268    19521    +4253     
+ Misses       8991     7807    -1184     
- Partials     1458     1470      +12     

Flag	Coverage Δ
e2e	52.62% <25.00%> (?)
unittest	59.37% <25.00%> (+<0.01%)	⬆️

[KanShiori]

/test pull-e2e-kind pull-e2e-kind-basic pull-e2e-kind-br pull-e2e-kind-serial pull-e2e-kind-tikv-scale-simultaneously

[KanShiori]

/test pull-e2e-kind pull-e2e-kind-br pull-e2e-kind-serial pull-e2e-kind-tikv-scale-simultaneously

[KanShiori]

/test pull-e2e-kind

[KanShiori]

/cherry-pick release-1.4

[ti-chi-bot]

@KanShiori: once the present PR merges, I will cherry-pick it on top of release-1.4 in the new PR and assign it to you.

In response to this:

/cherry-pick release-1.4

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.

[KanShiori]

/test pull-e2e-kind

[KanShiori]

/test pull-e2e-kind

[KanShiori]

/test pull-e2e-kind-basic

[KanShiori]

/test pull-e2e-kind

[KanShiori]

/test pull-e2e-kind-tikv-scale-simultaneously

[hanlins]

LGTM

[KanShiori]

/test pull-e2e-kind-tikv-scale-simultaneously pull-e2e-kind-serial pull-e2e-kind-basic pull-e2e-kind-across-kubernetes pull-e2e-kind

[KanShiori]

/test pull-e2e-kind pull-e2e-kind-basic pull-e2e-kind-serial

[KanShiori]

/test pull-e2e-kind-serial

[KanShiori]

/test pull-e2e-kind 

[KanShiori]

/test pull-e2e-kind

[ti-chi-bot]

@KanShiori: new pull request created to branch release-1.4: #4899.

In response to this:

/cherry-pick release-1.4

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.