sql: fix pick up possible field (tidb#29399) (pingcap#399) (pingcap#402)

sql: fix pick up possible field (tidb#29399) (pingcap#399)

tests: fix sync_diff configs for CI (pingcap#380) (pingcap#383)

sql: fix where condition without brackets problem (pingcap#372) (ping…

…cap#376)

sql: fix where condition without brackets problem (pingcap#372) (ping…

…cap#376)

*: update dumpling log and pd usage (pingcap#335) (pingcap#341)

*: update dumpling log and pd usage (pingcap#335) (pingcap#341)

*: migrate test-infra to testify (pingcap#344) (pingcap#348)

*: migrate test-infra to testify (pingcap#344)

*: use `show full tables` in ListAllDatabasesTables (pingcap#325) (pi…

…ngcap#342)