Refactor dynamic config

[Shaddoll]

What changed?

• Refactored dynamic config to enforce type of dynamic properties
• Refactored dynamic config to provide a source of truth for default values of dynamic properties

Why?
The default values and types of dynamic properties are declared in comments and therefore are not enforced in our code. People can make a mistake when using these dynamic properties.

How did you test it?
unit test

Potential risks
the default value of system.enableVisibilitySampling was incorrectly set to true in frontend, and we fixed it in this PR.
If the frontend was depending on the default value of this property, the behavior is changed in this PR, which means read from elasticsearch is not sampled.

Release notes

Documentation Changes

[coveralls]

Pull Request Test Coverage Report for Build 0181b111-9edb-4833-a669-2eceade3c3c4

• 643 of 801 (80.27%) changed or added relevant lines in 28 files are covered.
• 113 unchanged lines in 15 files lost coverage.
• Overall coverage increased (+0.002%) to 57.961%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
service/worker/scanner/tasklist/scavenger.go	1	2	50.0%
tools/cli/adminConfigStoreCommands.go	0	1	0.0%
cmd/server/cadence/server.go	0	2	0.0%
service/worker/scanner/executions/concrete_execution.go	7	9	77.78%
service/worker/scanner/executions/current_execution.go	7	9	77.78%
service/worker/scanner/timers/timers.go	7	9	77.78%
service/frontend/adminHandler.go	7	10	70.0%
tools/cli/domainUtils.go	0	3	0.0%
common/dynamicconfig/file_based_client.go	23	27	85.19%
host/dynamicconfig.go	12	16	75.0%

Files with Coverage Reduction	New Missed Lines	%
common/dynamicconfig/inMemoryClient.go	1	83.53%
common/dynamicconfig/nopClient.go	1	58.54%
host/dynamicconfig.go	1	68.69%
common/persistence/sql/workflowStateNonMaps.go	2	87.88%
common/dynamicconfig/config.go	3	86.63%
service/history/task/task.go	3	77.06%
service/history/task/transfer_standby_task_executor.go	3	89.32%
common/dynamicconfig/configstore/config_store_client.go	4	72.65%
service/history/decision/handler.go	4	72.21%
service/history/task/redispatcher.go	4	89.67%

Totals
Change from base Build 0181ae4f-d8b4-4177-8074-afb189b435d3:	0.002%
Covered Lines:	84026
Relevant Lines:	144970

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💛 - Coveralls

[Groxx]

Overall much improved I think, thanks a lot for doing this!