[core.lib] Add basic "pretty" printing to `store_conf'.
Removed `designs/nfv/nfv' in favor of `designs/neutron/snabbnfv-bench'.
Merge pull request #313 from eugeneia/store_conf-pretty-print

[core.lib] Add basic "pretty" printing to `store_conf'.
packet_filer: default proto to icmp

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
neutron2snabb: get vlan parameter from zone_vlan field

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Merge pull request #319 from virtualopensystems/misc_fixes

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

Discard `designs/nfv'
receive checksum offload
transmit checksum offload
the "insert checksum" bits of TXDESC must reflect the current context
precalculate the offload flags together with the context descriptor
check if the packet needs checksum before asking the chip to do it
add offload support for SCTP
test: start sending doctored packets to see if bad checksums are detected and if good ones can be inserted
adapt new selftest to #293 merge
a string value of "nil" is not a valid default anymore
the sink app can call an optional callback(p) before discarding the packet
test: the packet must have 0000 in the relevants checksum fields
clear checksum fields for offload to fill