Sanity issues: Do not assume vm to be parent of interface.

Change-Id: I37fbec62a8ed5c7f074ea7a505c0bcb9520329cb
use status_code instead of status for requests output

Change-Id: I5898cac86c5b94dfe5cf52f5dab15b46ed3c33d7
opencontrail integration

Change-Id: If8f54c6b4e8c6a2994d3eb8a72941370a0e48be2
Merge "opencontrail integration"