WIP router configuration API

[nicolaskagami]

TO-DO API:

• router-configuration (list, create, fetch, update, delete)
• bgp-config (create, fetch, update, delete)
• bgp-peer (list, create, fetch, update, delete)
  • associated bgp-config must exist
• static-route (list, create, fetch, update, delete)
• bfd-peer (list, create, fetch, update, delete)
• silo-attachment
• switch association

TO-DO reconcilers:

• mgd
• opte
• dpd