Local Rx traffic control using netem

netem -- network emulator package on linux can be use to introduce
packet loss, duplication, jitter etc in incoming packets. This script
simplifies the usage of otherwise cryptic netem commands.

Signed-off-by: tmande <tmande@marvell.com>
Merge branch 'master' of https://github.com/tanmayM/misc

Merging from remote before commiting new stuff