* feat: add mysql election
* feat: add mysql election
* chore: fix deps
* chore: fix deps
* fix: duplicate container
* fix: duplicate setup for sqlness
* fix: call once
* fix: do not use NOWAIT for mysql 5.7
* chore: apply comments
* fix: no parallel sqlness for mysql
* chore: comments and minor revert
* chore: apply comments
* chore: apply comments
* chore: add to table name
* ci: use 2 metasrv to detect election bugs
* refactor: better election logic
* chore: apply comments
* chore: apply comments
* feat: version check before startup