tree b161b4981fc9552124ebea90d7c7269649a2b896
parent 83e7986e4d91be8eef5218cb078b65735f611bcd
author Seyeon Jeong <seyeon@opennetworking.org> 1582881454 -0800
committer Seyeon Jeong <seyeon@opennetworking.org> 1592542760 -0700

[AETHER-76] Complete T3 offline mode

- For the performance improvement, T3 offline mode uses snapshots of the network states
called Network Information Base (NIB) instead of runtime interactions with ONOS core
during troubleshooting a Trellis system.
- Enables NIB to be manually filled with the followings via T3-load commands.
  - Static dump files of onos-diagnostics (t3-load-file).
  - Returns of API calls to live ONOS stores (t3-load-snapshot).
- Enables NIB to be auto-filled with live ONOS stores.
  - When T3-execution commands (e.g. pingall) found NIB is invalid.
- Partially tested with some mininet topos for Trellis
(https://github.com/opennetworkinglab/routing/tree/master/trellis).
- Usage instruction docs (https://docs.trellisfabric.org/troubleshooting.html).

Change-Id: I2bb546bdde454a034338cd896388fa0b37d868be
(cherry picked from commit c3803e7fad5fb28ecf3e83253f183a34936be4a0)