M2 Gate

[Carmine Rimi]

This issue is to be used as the "Blocking Issue" for whether we are done with M2.

Here are the simplified requirements:

1. CI Pipelines for Local, Public and Private use
2. *DD Patterns - TDD, ATDD, UCDD
3. Basic Lights On
   1. Network Discovery
   2. Flow Setup and Discovery
   3. Simple DPV - Data Path Validation

The basic acceptance tests:

1. Generate a virtual topology through mininet and confirm kilda discovers this topology.
2. Setup a flow (circuit / route) through kilda and confirm it is setup properly using other mechanisms (floodlight or other native mechanisms)
3. Setup a flow and validate that data can be sent across it. This includes the basic mechanism to generate a certain amount of traffic that will cross the data plane; this mechanism will be reused for stress tests too.