Removed `designs/nfv/nfv' in favor of `designs/neutron/snabbnfv-bench'.
Merge pull request #319 from virtualopensystems/misc_fixes

Misc fixes
Merge pull request #307 from eugeneia/discard_designs/nfv

Discard `designs/nfv'
NFV config: fix function load

 - pass t.port_id do virtio
 - create filter only if there are actually rules (# is >0)

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
neutron2snabb: fix filter generation

 - we do not support filters based on remote_group_id, jsut drop those
 - return an empty list when there are no valid rules found

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
snabbnfv-traffic: apply config on each internal iteration

Before it was 60 seconds - too slow

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>