Fix the way how pci bus ids are compared [2/2]

This should make network interface maps in the network proposal  work for
busids like: 0000:00/0000:00:03.0/0000:01:02.1

The patches try to maintain backwards compatibility with the old code as much
as possible.


 crowbar_framework/app/models/node_object.rb | 54 +++++++++++++----------------
 1 file changed, 25 insertions(+), 29 deletions(-)

Crowbar-Pull-ID: 03587f33beb579f50a699eb0e5b877e7f42332a7

Crowbar-Release: pebbles