Add a middleware for comparator to use

[bowenxia]

What changed?
Add a middleware for comparator to use.

Why?
We need to receive the yarpc req sent from PinotResponseComparator, and then pass the cadence-visibility-override value into ctx. So that PinotVisibilityTripleManager can use it to switch between pinot and es.

How did you test it?
Will do manually testing.

Potential risks

Release notes

Documentation Changes

[bowenxia]

Note: will not merge it until I test it is working

[davidporter-id-au]

oh, be sure to run the linter too

[coveralls]

Pull Request Test Coverage Report for Build 018d5cb2-79ed-4537-b4df-9fb310e60bc2

• -15 of 16 (6.25%) changed or added relevant lines in 3 files are covered.
• 142 unchanged lines in 16 files lost coverage.
• Overall coverage decreased (-0.05%) to 62.7%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
common/persistence/pinotVisibilityTripleManager.go	0	4	0.0%
common/rpc/middleware.go	0	11	0.0%

Files with Coverage Reduction	New Missed Lines	%
common/persistence/executionManager.go	2	78.94%
service/history/execution/mutable_state_util.go	2	37.63%
service/history/task/fetcher.go	2	85.57%
service/history/task/transfer_active_task_executor.go	2	72.35%
service/matching/taskListManager.go	2	80.2%
common/persistence/nosql/nosqlplugin/cassandra/workflow.go	3	59.55%
common/task/fifo_task_scheduler.go	3	84.54%
common/persistence/statsComputer.go	5	94.64%
service/history/task/transfer_standby_task_executor.go	6	86.6%
service/history/task/cross_cluster_task_processor.go	8	80.79%

Totals
Change from base Build 018d5b75-04d8-4a7f-a749-a07f0da8cb21:	-0.05%
Covered Lines:	92254
Relevant Lines:	147135

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💛 - Coveralls