v1.17.0

Features/Updates

• Bump dependencies (Golang, Ruby, caddy, vendored libraries)
• log dns queries and health check responses at debug level, failures at warn level
• new configurable fields:
  • local_health_interval: how often the health server polls monit and local job health scripts
  • remote_health_interval: how often bosh-dns polls remote health servers
  • synchronous_check_timeout: network timeout for queries with y1 when health status not cached
  • request_timeout: network timeout for health server requests

Fixes

• stop redundant health check retries between poll intervals
• stop redundant health check requests when querying a domain
• Fix compilation error on windows due to broken symlinks
• health server should shutdown cleanly on sigterm