v0.6.0

Added

• Use elasticsearch as a time series database
• Add elasticsearch graph backend
• New node ID that persists between agent restart
• New afpacket capture type
• New 'fabric' probe to register external equipment like
  Top Of Rack switches
• Gremlin improvements:
  • Add 'Range' and 'Limit' Gremlin steps
  • Add 'Hops' step to get the nodes traversed by a set of flows
• Add architecture section to the documentation
• Add devstack functional testing

Changed

• Skydive binary is linked statically with pcap
• Renamed 'pcap' probe to 'gopacket'
• Web UI improvements:
  • Clearer representation using groups of nodes
  • Node pinning
  • Highlight traversed nodes in Web UI
• Bug fixes:
  • Wait for analyzer before starting agent
  • Avoid capture create with duplicate gremlin request (both thanks to
    Konstantin Dorfman)
  • Fix shortestPath and add a test to illustrate the bug (thanks to
    Antoine Eiche)
  • Limit neutron API calls (thanks to Jean-Philippe Braun)
  • Use authenticated request while waiting for the analyzer (thanks to
    Mathieu Rohon)