Add ShardIndexingPressure framework level construct and Stats#1015

Merged

adnapibar merged 4 commits intoopensearch-project:feature/478_indexBackPressurefrom getsaurabh02:6_ShardIndexingPressure_Framework

Aug 12, 2021

+2,618-1

Commits on Jul 27, 2021

Add ShardIndexingPressure framework level construct and related Stats artefacts.
getsaurabh02
committed

Commits on Jul 29, 2021

Test and code refactoring for shard indexing pressure.
getsaurabh02
committed

Commits on Jul 31, 2021

Moved the average calculation logic to common memory manager util.
getsaurabh02
committed

Commits on Aug 10, 2021

Add wrapper for releasable in ShardIndexingPressure operations.
getsaurabh02
committed