Testing TiDB efficiently

Features

• Tools
  • artifacts list TiDB/TiKV/Pd latest tarballs
  • case2pr found the PR that a case is added
  • tipocket-ctl is a command line tool for tipocket
  • ansible ansible scripts that help initialize machines
• Hack
  • TiKV dockerfile is almost same as the official dockerfile
  • tidb-operator-yaml is a tidb-cluster CR definition
• Transaction testing
  • txn-test provides a demo to reproduce txn-related bug