fix TiCDC across K8s address

[csuzhangxc]

What problem does this PR solve?

fix bug introduced in #5040

W0609 09:40:30.451678       1 ticdc_member_manager.go:268] Failed to get status for Pod tc-1-ticdc-0 of [ns-1/tc-1], error: Get "http://tc-1-ticdc-0.tc-1-ticdc-peer.ns-1.cluster.local:8301/status": dial tcp: lookup tc-1-ticdc-0.tc-1-ticdc-peer.ns-1.cluster.local on 10.234.0.10:53: no such host

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]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[csuzhangxc]

/test pull-e2e-kind-across-kubernetes

[ti-chi-bot]

@csuzhangxc: The label(s) /pull-e2e-kind-across-kubernetes cannot be applied, because the repository doesn't have them.

In response to this:

/test pull-e2e-kind-across-kubernetes

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[ti-chi-bot]

@csuzhangxc: No presubmit jobs available for pingcap/tidb-operator@master

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/test pull-e2e-kind-across-kubernetes

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[csuzhangxc]

/cherry-pick release-1.4

[ti-chi-bot]

@csuzhangxc: 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

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[ti-chi-bot]

@csuzhangxc: The label(s) /release-1.4 cannot be applied, because the repository doesn't have them.

In response to this:

/cherry-pick release-1.4

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[csuzhangxc]

/cherry-pick release-1.5

[ti-chi-bot]

@csuzhangxc: once the present PR merges, I will cherry-pick it on top of release-1.5 in the new PR and assign it to you.

In response to this:

/cherry-pick release-1.5

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[ti-chi-bot]

@csuzhangxc: The label(s) /release-1.5 cannot be applied, because the repository doesn't have them.

In response to this:

/cherry-pick release-1.5

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[codecov-commenter]

Codecov Report

Merging #5060 (3a789ca) into master (0cd7c85) will increase coverage by 1.31%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5060      +/-   ##
==========================================
+ Coverage   57.25%   58.56%   +1.31%     
==========================================
  Files         245      249       +4     
  Lines       28073    31423    +3350     
==========================================
+ Hits        16073    18403    +2330     
- Misses      10435    11398     +963     
- Partials     1565     1622      +57     

Flag	Coverage Δ
e2e	26.48% <100.00%> (?)
unittest	57.26% <100.00%> (+0.01%)	⬆️

[csuzhangxc]

/test pull-e2e-kind-across-kubernetes

[ti-chi-bot]

@csuzhangxc: The label(s) /pull-e2e-kind-across-kubernetes cannot be applied, because the repository doesn't have them.

In response to this:

/test pull-e2e-kind-across-kubernetes

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[ti-chi-bot]

@csuzhangxc: No presubmit jobs available for pingcap/tidb-operator@master

In response to this:

/test pull-e2e-kind-across-kubernetes

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[ti-chi-bot]

@csuzhangxc: new pull request created to branch release-1.4: #5061.

In response to this:

/cherry-pick release-1.4

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[ti-chi-bot]

@csuzhangxc: new pull request created to branch release-1.5: #5062.

In response to this:

/cherry-pick release-1.5

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