[SnabbBot] Fail tasks when build fails, include test output
even for successul test runs in tasks/test.sh .
Merge pull request #266 from eugeneia/snabb_bot_fixes

[SnabbBot] Make tasks fail when build fails
nfv.config: Make traffic rate policing mode optional

The default is off.
PCI: don't try to touch dirs or files that doesn't exist
Intel10g: fully implement shared resource negotiation (section 10.5.4)
add verification to intel_app.selftest()
Merge pull request #240 from javierguerragiraldez/negotiate_link

Intel10G: better NIC initialization
[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.