Introduce a dynamic config for cassandra all consistency level delete

[Shaddoll]

What changed?
Introduce a dynamic config for cassandra all consistency level delete

Why?
feature flag

How did you test it?

Potential risks

Release notes

Documentation Changes

[coveralls]

Pull Request Test Coverage Report for Build 01837ab5-14d3-45d3-96a4-f5709cbbbd74

• 48 of 66 (72.73%) changed or added relevant lines in 18 files are covered.
• 81 unchanged lines in 17 files lost coverage.
• Overall coverage decreased (-0.004%) to 57.265%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
common/persistence/nosql/nosqlplugin/mongodb/plugin.go	0	2	0.0%
common/persistence/persistence-tests/persistenceTestBase.go	0	4	0.0%
common/persistence/nosql/nosqlplugin/cassandra/db.go	8	20	40.0%

Files with Coverage Reduction	New Missed Lines	%
common/types/shared.go	1	41.66%
common/persistence/historyManager.go	2	66.67%
common/task/weightedRoundRobinTaskScheduler.go	2	89.12%
common/util.go	2	52.74%
service/history/handler.go	2	47.3%
service/matching/matcher.go	2	91.46%
service/history/task/fetcher.go	3	91.75%
service/matching/taskListManager.go	3	76.87%
common/persistence/serialization/parser.go	4	62.41%
common/persistence/serialization/thrift_decoder.go	4	53.06%

Totals
Change from base Build 01837a94-cac1-4f41-a994-e1357753d5a6:	-0.004%
Covered Lines:	85124
Relevant Lines:	148648

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💛 - Coveralls