Handle abandoning a nic when the network barclamp takes over a system. [2/4]

The network barclamp now properly handles the scenario where we
abandon the interface we initially PXE booted and installed from, and
the default smoketest now tests that configuration.


 chef/cookbooks/barclamp/libraries/nic.rb |   16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

Crowbar-Pull-ID: dd3666f0c95a7d5b43e788a8e2c8b5d2e1e2e7bd

Crowbar-Release: pebbles