Add @andywingo ssh pubkey

* authorized_keys: Add my key.
Merge pull request #276 from andywingo/authorized-key

Add @andywingo ssh pubkey
Add @dpino ssh pubkey
Merge pull request #277 from dpino/patch-1

Update authorized_keys
Add tupty's public key to authorized_keys
Merge pull request #278 from gth828r/master

Add tupty's public key to authorized_keys
Fix virtio/net_device receive to support iovec.offset>0

Because virtio does not provide a way to specify offsets we use
memmove(3) to adjust the iovec to have offset=0 before sending.

Fixes the problem reported on this mailing list thread:
  https://groups.google.com/forum/#!topic/snabb-devel/ar778eECIL4
Merge pull request #281 from lukego/l2tpv3-virtio-fix

Fix virtio/net_device receive to support iovec.offset>0
Merge pull request #273 from alexandergall/nd_light-fix

Fix issues with nd_light
[lib.nfv.config] `ns_responder' is no longer used.
[lib.nfv.config] Add NFV feature tests using pcap.
[lib.nfv.config] Improve selftest.
Change test_fixtures/nfvconfig/test_functions/same_vlan.ports MAC settings.
[bench_env] Added host-nic-snabbnfv-guests.sh for testing
snabbnfv-traffic.
[lib.nfv] Added intial selftest.sh .
[lib.nfv.config] Fix broken configuration logic with regards
to L2TPv3 and nd_light.
[lib.nfv] Increase time waiting for VMs to boot in selftest.sh .
[lib.nfv] Instead of sleeping poll VMs for readiness in selftest.sh .
[lib.nfv] selftest: Refactor asserts into function, document
bench_env BOOTARGS variable reset in usage message.
[lib.nfv] selftest.sh: Factored out `test_ping' and added
`test_jumbping', `test_checksum' and `test_iperf'.