TiDB Operator 0.2.0 Release Notes

TiDB Operator version: 0.2.0

• Support auto-failover experimentally
• Manage TiDB service via Tiller instead of TiDB Operator, allow more parameters to be customized (required for public cloud load balancer)
• Add toleration for TiDB cluster components (useful for dedicated deployment)
• Lint and format code in CI
• Refactor upgrade functions as interface