Sync the storage pool stats in DB with the actual stats from stats collector

[sureshanaparti]

Description

This PR syncs the pool stats in DB with the actual stats from stats collector if there are any discrepancies with in-memory or DB stats - both capacity (disksizetotal) and used (disksizeused) bytes.

Types of changes

• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] Enhancement (improves an existing feature and functionality)
• [ ] Cleanup (Code refactoring and cleanup, that may add test cases)
• [ ] build/CI

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• [ ] Major
• [x] Minor

Bug Severity

• [ ] BLOCKER
• [ ] Critical
• [ ] Major
• [ ] Minor
• [ ] Trivial

Screenshots (if appropriate):

How Has This Been Tested?

Checked the pool stats after updating capacitybytes for the pool - DB sync-ed with the actual capacitybytes from stats collector.

How did you try to break this feature and the system with this change?