fix(pd): fix the pd name of tc with across k8s opt

[liubog2008]

What problem does this PR solve?

Now if spec.acrossK8s is set but spec.clusterDomain is empty in TC, the upgrading process of PD will be blocked because the name of pd in status is mismatched with the return result of function PdName.

For now, if spec.clusterDomain is empty, the PdName will return pod name whether spec.acrossK8s is true or false. However, if spec.acrossK8s is true, the real pd name generated by start-script is the full domain name.

After this PR merged, PdName will also return full domain name when spec.acrossK8s is true

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:

• KanShiori
• csuzhangxc

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[codecov-commenter]

Codecov Report

Merging #4721 (0a4c29a) into master (35f941e) will increase coverage by 9.76%.
The diff coverage is 80.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4721      +/-   ##
==========================================
+ Coverage   61.56%   71.32%   +9.76%     
==========================================
  Files         206      210       +4     
  Lines       22750    25494    +2744     
==========================================
+ Hits        14006    18184    +4178     
+ Misses       7444     5985    -1459     
- Partials     1300     1325      +25     

Flag	Coverage Δ
e2e	57.64% <80.00%> (?)
unittest	61.55% <66.66%> (-0.01%)	⬇️

[liubog2008]

/test pull-e2e-kind-across-kubernetes

[liubog2008]

/test pull-e2e-kind

[KanShiori]

/test pull-e2e-kind

[KanShiori]

/merge

[ti-chi-bot]

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

Commit hash: 46a0800

[liubog2008]

/test pull-e2e-kind-basic

[liubog2008]

/test pull-e2e-kind-br

[KanShiori]

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

[liubog2008]

/test e2e-examples

[liubog2008]

/test pull-e2e-kind-across-kubernetes

[liubog2008]

/test pull-e2e-kind-serial

[KanShiori]

/test pull-e2e-kind-across-kubernetes

[KanShiori]

/test pull-e2e-kind-across-kubernetes

[KanShiori]

/test pull-e2e-kind-across-kubernetes

[KanShiori]

/test pull-e2e-kind-across-kubernetes

[liubog2008]

/test pull-e2e-kind-across-kubernetes

[liubog2008]

/test pull-e2e-kind-across-kubernetes

[ti-srebot]

cherry pick to release-1.3 in PR #4728