Add MigratableKVStore trait
#16203
| Job | Run time |
|---|---|
| 18m 38s | |
| 1m 42s | |
| 1h 8m 12s | |
| 18m 44s | |
| 1h 13m 8s | |
| 7m 37s | |
| 1h 30m 6s | |
| 4h 40m 50s | |
| 12m 38s | |
| 1h 44m 25s | |
| 54s | |
| 1h 58m 36s | |
| 11s | |
| 1h 2m 52s | |
| 1h 32m 33s | |
| 1h 2m 7s | |
| 16h 53m 13s |