Added tests for the remaining util methods

[agautam478]

What changed?
Had to create a new TestNosqlExecutionStoreUtilsExtended to make a more generic test for all the functions.
About 20% of the file is pending and we should reach close to 100% coverage for these tests

Why?
as a part of code coverage week.

How did you test it?
unit test

Potential risks

Release notes

Documentation Changes

[coveralls]

Pull Request Test Coverage Report for Build 018ea09d-9165-418d-af35-c4d26d93f830

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 50 unchanged lines in 12 files lost coverage.
• Overall coverage increased (+0.02%) to 65.788%

---

Files with Coverage Reduction	New Missed Lines	%
service/history/task/transfer_standby_task_executor.go	2	87.01%
service/matching/taskReader.go	2	84.88%
common/task/weighted_round_robin_task_scheduler.go	2	88.06%
common/persistence/sql/sqlplugin/mysql/task.go	2	73.68%
service/frontend/api/handler.go	2	62.05%
service/history/task/transfer_active_task_executor.go	2	72.7%
common/persistence/sql/sqlplugin/mysql/db.go	2	79.49%
common/archiver/filestore/historyArchiver.go	4	80.95%
service/history/task/fetcher.go	4	85.05%
service/history/execution/mutable_state_task_refresher.go	8	66.77%

Totals
Change from base Build 018ea09a-e4f5-4af7-b8c3-8cd2b97b296f:	0.02%
Covered Lines:	96274
Relevant Lines:	146339

---

💛 - Coveralls