Add network packet duplication experiment

[xcaspar]

Issue Description

Type: feature request

Describe what happened (or what feature you want)

Add network packet duplication experiment.

Describe what you expected to happen

Support the following command:

blade create network duplicate --percent 80 --interface eth0
blade create network duplicate --percent 50 --interface eth0 --exclude-port 22,8000
blade create network duplicate --percent 50 --interface eth0 --remote-port 80,7001,8000-8090
blade create network duplicate --percent 50 --interface eth0 --local-port 7001,8000-8090
blade create network duplicate --percent 50 --interface eth0 --local-port 7001,8080 --remote-port 80,8000-8090

Specify duplication percent with interface,local-port,remote-port and exlude-port flags.

Tell us your environment

Linux

Anything else we need to know?