planner: add test for HotRegionsHistoryTableExtractor

[IcePigZDB]

Signed-off-by: IcePigZDB icepigzdb@gmail.com

Problem Summary: Create a new table TIDB_HOT_REGIONS_HISTORY in the INFORMATION_SCHEMAT database to retrieve history hotspot information stored by PD periodically.

What problem does this PR solve?

Proposal: pingcap/tidb#27487
Associated Issue: #25281

Associated PRs in TiDB:
PRs splited from oversize PR #27224 in merge order :

1. infoschema: add tidb_hot_regions_history virtual table #27373
2. planner: add extractor for tidb_hot_regions_history #27374
3. executor: add retriver for tidb_hot_regions_history  #27375
4. planner: add test for HotRegionsHistoryTableExtractor #27899 <- current one
5. executor: add test for hotRegionsHistoryRetriver #27900

Associated PR in PD:
PRs splited from old oversize one: tikv/pd/pull/3989

• config: add hot region history configurations tikv/pd#4019
• cluster: add hot_region_storage tikv/pd#4020
• api: add interface for hot_region info reqeust tikv/pd#4021

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

select * from information_schema.tidb_hot_regions_history where update_time>='2019-10-10 10:10:10' and update_time<'2019-10-11 10:10:10'

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[IcePigZDB]

closed by #27374