[Reclaiming buffer][202106] Database migrator for reclaiming buffer #1897
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This is to cherry-pick community PR #1822 to 202106.
What I did
Db migrator support reclaiming reserved buffer for unused ports
As there is no empty slot for database version between 202106 and master (202111), this migration will be done regardless of whether database version is changed. The DB migrator should be idempotent.
Signed-off-by: Stephen Sun [email protected]
How I did it
For admin down ports, if the buffer objects configuration aligns with default configuration, set the buffer objects configuration as:
How to verify it
Previous command output (if the output of a command-line utility has changed)
New command output (if the output of a command-line utility has changed)