HDDS-9377. Implement some metrics with RW-lock instead of synchronization#7708

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juncevich wants to merge 3 commits intoapache:masterfrom juncevich:HDDS-9377

+3,074-321

Commits on Feb 10, 2025

HDDS-9377. Remove blocking metrics
juncevich
committed

Commits on Feb 11, 2025

HDDS-9377. Add tests + minor code improvements.
juncevich
committed

Commits on Feb 12, 2025

HDDS-9377. Fix review notices
juncevich
committed