Automatically adjust task priority and redispatch interval based on attempts

[yycptt]

What changed?

• Automatically adjust task priority to low when task is keep retrying
• Assign different redispatch backoff interval for different tasks based on number of attempts

Why?

• Reducing the impact of tasks that are keep retrying.

How did you test it?

• Unit test

Potential risks

Release notes

Documentation Changes

[coveralls]

Pull Request Test Coverage Report for Build 2e281532-0ce9-419a-b13e-695201ef3d55

• 83 of 88 (94.32%) changed or added relevant lines in 8 files are covered.
• 38 unchanged lines in 12 files lost coverage.
• Overall coverage increased (+0.06%) to 56.515%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
service/history/task/redispatcher.go	47	52	90.38%

Files with Coverage Reduction	New Missed Lines	%
client/history/client.go	2	41.25%
client/history/metricClient.go	2	47.05%
common/membership/rpServiceResolver.go	2	73.58%
common/task/fifoTaskScheduler.go	2	87.63%
common/task/weightedRoundRobinTaskScheduler.go	2	89.12%
service/history/handler.go	2	48.15%
service/history/task/redispatcher.go	2	89.67%
common/cache/lru.go	3	90.73%
common/persistence/dataManagerInterfaces.go	3	62.54%
service/frontend/workflowHandler.go	4	58.8%

Totals
Change from base Build 25aa045b-af2b-4934-a836-df202095baa5:	0.06%
Covered Lines:	79034
Relevant Lines:	139846

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💛 - Coveralls