storage: unify the keyspace naming

[JmPotato]

Signed-off-by: JmPotato ghzpotato@gmail.com

What problem does this PR solve?

Issue Number: ref #5293.

What is changed and how does it work?

Unify the keyspace naming.

Check List

Tests

• Unit test
• Integration test

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• rleungx

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[codecov]

Codecov Report

Base: 74.91% // Head: 75.58% // Increases project coverage by +0.67% 🎉

Coverage data is based on head (cbf0853) compared to base (364a1e1).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5863      +/-   ##
==========================================
+ Coverage   74.91%   75.58%   +0.67%     
==========================================
  Files         335      337       +2     
  Lines       34094    34146      +52     
==========================================
+ Hits        25540    25809     +269     
+ Misses       6359     6116     -243     
- Partials     2195     2221      +26     

Flag	Coverage Δ
unittests	75.58% <100.00%> (+0.67%)	⬆️

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

Impacted Files	Coverage Δ
server/storage/storage.go	71.15% <ø> (ø)
pkg/storage/endpoint/gc_key_space.go	66.66% <100.00%> (ø)
pkg/storage/endpoint/key_path.go	93.18% <100.00%> (+2.27%)	⬆️
pkg/utils/tempurl/tempurl.go	45.00% <0.00%> (-15.00%)	⬇️
pkg/dashboard/adapter/manager.go	74.71% <0.00%> (-6.90%)	⬇️
pkg/storage/kv/etcd_kv.go	72.22% <0.00%> (-3.18%)	⬇️
pkg/election/leadership.go	77.31% <0.00%> (-3.10%)	⬇️
server/tso/tso.go	68.53% <0.00%> (-2.81%)	⬇️
server/schedulers/shuffle_hot_region.go	55.12% <0.00%> (-2.57%)	⬇️
server/schedule/labeler/rules.go	87.50% <0.00%> (-2.28%)	⬇️
... and 27 more

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[JmPotato]

/merge

[ti-chi-bot]

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/run-all-tests

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[ti-chi-bot]

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

Commit hash: cbf0853