Fix issues in network barclamp exposed by Travis [1/1]

This pull fixes several issues identified by Travis in the network barclamp.

One issue may remain, but additional logging was added to help identify the issue if so.


 .../barclamp_network/node_attribute_filter.rb      |   18 ++++++++++++++----
 .../barclamp_network/test/unit/conduit_test.rb     |   16 +++++++++-------
 .../test/unit/config_action_model_test.rb          |    8 ++++----
 .../test/unit/create_bridge_test.rb                |    4 ++--
 .../test/unit/network_utils_test.rb                |    2 +-
 5 files changed, 30 insertions(+), 18 deletions(-)

Crowbar-Pull-ID: 1d7a19a472721e56526bfa59955ce4a3891c3e6a

Crowbar-Release: development