Proposal: experimental ipvlan l3 mode routing

[YujiOshima]

Ipvlan l3 mode has very good performance and scalability.
But it needs to write routes to container networks in a routing tables at hosts.

This issue is to discuss how to manage the routing tables in ipvlan l3 mode.
In this plugin I make routing manager interface for ipvlan l3 mode and GoBGP routing manager.
it exchanges routes to container networks inter hosts with BGP protocol by GoBGP, and writes the routes to routing tables of each host.
It enable easy to use high performance , and high scalability(as BGP can aggregate routes) network.

[GordonTheTurtle]

@YujiOshima It has been detected that this issue has not received any activity in over 6 months. Can you please let us know if it is still relevant:

• For a bug: do you still experience the issue with the latest version?
• For a feature request: was your request appropriately answered in a later version?

Thank you!
This issue will be automatically closed in 1 week unless it is commented on.
For more information please refer to #1926