Added test for UpdateTaskList

[jakobht]

What changed?
Added Unit tests

Why?
Code coverage

How did you test it?

Potential risks

Release notes

Documentation Changes

[coveralls]

Pull Request Test Coverage Report for Build 018fa4b2-cf81-4f7c-8c44-a00664671260

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 61 unchanged lines in 16 files lost coverage.
• Overall coverage decreased (-0.02%) to 69.284%

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Files with Coverage Reduction	New Missed Lines	%
common/task/weighted_round_robin_task_scheduler.go	2	89.05%
common/task/parallel_task_processor.go	2	93.06%
service/matching/tasklist/db.go	2	73.23%
common/persistence/execution_manager.go	2	86.43%
service/matching/tasklist/task_list_manager.go	2	76.09%
common/task/fifo_task_scheduler.go	2	85.57%
common/persistence/sql/sqlplugin/mysql/task.go	2	73.68%
service/history/task/transfer_active_task_executor.go	2	72.72%
common/persistence/sql/sqlplugin/mysql/db.go	2	79.49%
common/log/tag/tags.go	3	50.46%

Totals
Change from base Build 018fa464-40c9-4742-b88d-967555b43b81:	-0.02%
Covered Lines:	102080
Relevant Lines:	147336

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💛 - Coveralls

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 67.84%. Comparing base (fc6fae5) to head (16bbdb2).

Additional details and impacted files

see 4 files with indirect coverage changes

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