Improve test coverage for sql_execution_store_util

[Shaddoll]

What changed?
Add unit tests for createTimerTasks, createCrossClusterTasks and createReplicationTasks functions

Why?
Improve test coverage

How did you test it?
unit tests

Potential risks

Release notes

Documentation Changes

[coveralls]

Pull Request Test Coverage Report for Build 018dc8ef-a587-4b75-ab96-6118426ace80

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 107 unchanged lines in 13 files lost coverage.
• Overall coverage increased (+0.04%) to 62.766%

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Files with Coverage Reduction	New Missed Lines	%
common/persistence/historyManager.go	2	66.67%
common/task/weighted_round_robin_task_scheduler.go	2	88.06%
service/frontend/api/handler.go	2	62.17%
common/archiver/filestore/historyArchiver.go	4	80.95%
common/task/fifo_task_scheduler.go	4	85.57%
service/history/task/fetcher.go	4	85.05%
service/history/task/transfer_standby_task_executor.go	4	87.84%
service/matching/taskListManager.go	5	80.2%
common/persistence/statsComputer.go	6	93.57%
service/frontend/wrappers/metered/metered.go	9	62.02%

Totals
Change from base Build 018dc86c-7c7f-47df-a351-981aa1d96cc2:	0.04%
Covered Lines:	92684
Relevant Lines:	147666

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💛 - Coveralls