[Reclaiming buffer][202012] Database migrator for reclaiming buffer#1898

Merged

liat-grozovik merged 9 commits intosonic-net:202012from stephenxs:reclaim-buffer-202012

Dec 11, 2021

+20,445-3,401

Commits on Sep 26, 2021

Reclaim unused buffer

stephenxs
authored and
stephens
committed
Fix issue: default lossless PG should be left in CONFIG_DB
stephens
committed

Commits on Sep 27, 2021

Fix LGTM alerts
stephenxs
committed

Commits on Oct 9, 2021

Fix issue: db_migrate won't run if switch is upgraded from 202012
stephens
committed

Commits on Oct 15, 2021

Remove unnecessary return statement
stephens
committed
Fix issue: some redundant table entries were added to APPL_DB

stephenxs
authored and
stephens
committed
Add testcases for reclaiming buffer warm reboot test

stephenxs
authored and
stephens
committed

Commits on Oct 16, 2021

Fix issue: warm rebooting from the same version results in some zero profiles removed

stephenxs
authored and
stephens
committed

Commits on Dec 8, 2021

Enhance the logic to determine pool model (single pool/double pools)

stephenxs
authored and
stephens
committed