Feature: NGINX Bandwidth Control

[rikatz]

For documentation and implementation:

A new feature would be great in NGINX Ingress Controller: Bandwidth control:

This is done by the Core of NGINX.

http://nginx.org/en/docs/http/ngx_http_core_module.html#limit_rate

The main idea is:

• A global limit (configured through ConfigMap) that should be used in All VHosts OR
• If this doesn't exists, a configuration per vhost / ingress done through annotations.

Further implementations can also use the limit_req and limit_conn modules to Limit a per/ip request (but this could cause also a DoS in a lot of clients using a NAT to connect to our service, so should be used carefully).

[zjj2wry]

anyone in process this? i want pick this for starter.

[rikatz]

@zjj2wry I'm pretty busy those days :) Feel free to code this, and ping me in your PR so I can review for you ;)