Added tests for all the methods in utils file

[agautam478]

What changed?
This PR concludes the tests for all the methods in nosql_execution_Store_util.go file.
There are still some missing lines that I will address to take coverage to 100%

Why?
code coverage increase.

How did you test it?
unit test

Potential risks

Release notes

Documentation Changes

[codecov]

Codecov Report

Merging #5861 (0e59c94) into master (f5fde92) will increase coverage by 0.02%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

❗ Current head 0e59c94 differs from pull request most recent head 9460269. Consider uploading reports for the commit 9460269 to get more accurate results

Additional details and impacted files

see 5 files with indirect coverage changes

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[coveralls]

Pull Request Test Coverage Report for Build 018eaa3c-d2ad-41ea-ae6c-46f5aedd05d3

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 46 unchanged lines in 7 files lost coverage.
• Overall coverage increased (+0.03%) to 66.222%

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Files with Coverage Reduction	New Missed Lines	%
service/matching/taskReader.go	2	84.88%
common/task/weighted_round_robin_task_scheduler.go	2	88.06%
service/history/task/transfer_active_task_executor.go	2	72.7%
service/matching/taskListManager.go	2	79.7%
service/history/task/transfer_standby_task_executor.go	4	87.42%
service/history/task/fetcher.go	4	86.08%
service/history/execution/mutable_state_task_refresher.go	30	62.03%

Totals
Change from base Build 018eaa35-d8e0-4c02-b11e-97f9473c5726:	0.03%
Covered Lines:	96907
Relevant Lines:	146337

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💛 - Coveralls