Merge pull request #24 from robhoes/ea1254

CA-99828 Add a new bond option: lacp-fallback-ab
CA-121503 - Make use of rc and stderr when appropriate.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Fix up tabs vs spaces
Use begin/end blocks correctly.
Merge pull request #25 from andyhhp/ca-121503

CA-121503 - Make use of rc and stderr in the case of an error
add config file for network.conf to select the backend type

Signed-off-by: Rob Hoes <rob.hoes@citrix.com>