v2.2.1-alpha.3

Changes

• xenon: add preStop timeout (#612)
• api: add lost gencode (#608)
• xenon: runCommandLocal timeout kill (#605)

Features

• ci: update the codecheck items and the build items. (#613)
• feat(user): Use super users to replace root user (#601)
• internal: support changing passwords. (#585)
• *: Support to configure grant option and SSL when creating users. (#575)
• *: remove useless import and clear logic of xenonchecker. (#600)
• *: Prevent Leader from accidentally hanging up data inconsistency (#597)
• *: Add inCluster related API and xenon checker (#596)

Improvements

• Doc: Add backup_cron in English #564 (#593)
• doc: add backupschedule docs in zh (#582)

Bug Fixes

• mysqlcluster: comment the innodb user native aio config #576 (#577)
• mysqlcluster: remove error role policy rule (#603)
• controller: delete cluster then delete backup cr #570 (#581)