cluster: skip updating topology when reload with --skip-restart

[AstroProfundis]

What problem does this PR solve?

Fix #1507

Check List

Tests

• Manual test (add detailed scripts or steps below)

Related changes

• Need to cherry-pick to the release branch

Release notes:

NONE

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• lucklove

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[codecov-commenter]

Codecov Report

Merging #1513 (7971e74) into master (9a1ad59) will increase coverage by 24.76%.
The diff coverage is 25.00%.

❗ Current head 7971e74 differs from pull request most recent head 9ff0f19. Consider uploading reports for the commit 9ff0f19 to get more accurate results

@@             Coverage Diff             @@
##           master    #1513       +/-   ##
===========================================
+ Coverage   26.18%   50.95%   +24.76%     
===========================================
  Files         267      292       +25     
  Lines       23942    26075     +2133     
===========================================
+ Hits         6270    13286     +7016     
+ Misses      16849    10967     -5882     
- Partials      823     1822      +999     

Flag	Coverage Δ
cluster	35.41% <0.00%> (?)
dm	26.31% <25.00%> (?)
integrate	45.35% <25.00%> (+29.23%)	⬆️
playground	13.79% <ø> (?)
tiup	16.11% <ø> (ø)
unittest	22.72% <0.00%> (ø)

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

Impacted Files	Coverage Δ
pkg/cluster/manager/reload.go	62.16% <25.00%> (+62.16%)	⬆️
components/playground/instance/pump.go	0.00% <0.00%> (ø)
...onents/playground/instance/tiflash_proxy_config.go	83.33% <0.00%> (ø)
components/playground/instance/instance.go	51.72% <0.00%> (ø)
pkg/logger/debug.go	20.00% <0.00%> (ø)
pkg/logger/logger.go	100.00% <0.00%> (ø)
pkg/cluster/operation/check.go	0.00% <0.00%> (ø)
pkg/cluster/operation/systemd.go	0.00% <0.00%> (ø)
components/playground/instance/tikv_config.go	100.00% <0.00%> (ø)
components/playground/instance/tikv.go	67.85% <0.00%> (ø)
... and 188 more

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[lucklove]

LGTM

[AstroProfundis]

/merge

[ti-chi-bot]

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

Commit hash: 9ff0f19