cluster: fix wrong data_dir for imported drainer instances

[AstroProfundis]

What problem does this PR solve?

Fix #1345

Related changes

• Need to cherry-pick to the release branch

Release notes:

cluster: fix wrong data_dir for imported drainer instances

[lucklove]

/lgtm

[ti-chi-bot]

[REVIEW NOTIFICATION]

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• lucklove

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[lucklove]

/merge

[ti-chi-bot]

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

Commit hash: 654b44f

[Rustin170506]

@ti-chi-bot

[Rustin170506]

@ti-chi-bot

[Rustin170506]

@ti-chi-bot

[AstroProfundis]

/merge

[codecov-commenter]

Codecov Report

Merging #1346 (046d719) into master (073b8a9) will increase coverage by 28.63%.
The diff coverage is 0.00%.

@@             Coverage Diff             @@
##           master    #1346       +/-   ##
===========================================
+ Coverage   25.42%   54.05%   +28.63%     
===========================================
  Files         265      290       +25     
  Lines       20427    22314     +1887     
===========================================
+ Hits         5193    12062     +6869     
+ Misses      14437     8348     -6089     
- Partials      797     1904     +1107     

Flag	Coverage Δ
cluster	41.24% <0.00%> (?)
dm	24.72% <0.00%> (?)
integrate	48.54% <0.00%> (+33.02%)	⬆️
playground	13.78% <ø> (?)
tiup	15.52% <ø> (ø)
unittest	21.71% <0.00%> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/cluster/ansible/service.go	3.53% <0.00%> (-0.10%)	⬇️
pkg/cluster/operation/check.go	46.70% <0.00%> (ø)
pkg/cluster/operation/action.go	63.71% <0.00%> (ø)
pkg/cluster/operation/systemd.go	70.00% <0.00%> (ø)
...onents/playground/instance/tiflash_proxy_config.go	81.81% <0.00%> (ø)
components/playground/instance/tiflash.go	59.09% <0.00%> (ø)
components/playground/instance/pd.go	73.91% <0.00%> (ø)
pkg/cluster/operation/destroy.go	54.23% <0.00%> (ø)
components/playground/instance/pump.go	0.00% <0.00%> (ø)
pkg/logger/audit.go	53.33% <0.00%> (ø)
... and 210 more

---

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