Vitess v2.0.0-alpha5

Changes since v2.0.0-alpha4

• New built-in backup
  plugin to store backups in Google Cloud Storage.
  • See the Vitess on Kubernetes guide for an
    example of usage.
• The Vitess PHP client now
  uses gRPC.
• Vitess Hadoop connector
  now uses the new gRPC-based Java client.
• Self-contained demo
  for VTGate V3, which is a preview feature as
  of Vitess 2.0.
• The vtctlclient-to-vtctld protocol now defaults to gRPC.