CA-102855: Gateway PIF was not set properly when creating bond while management disabled

This is fixed by ensuring that, during a bond create or destroy, when the IP config is
move from bond slave to master or vice versa, only one of the PIFs has IP config.

Signed-off-by: Rob Hoes <rob.hoes@citrix.com>
Merge pull request #1134 from robhoes/ca102855

 	CA-102855: Gateway PIF was not set properly when creating bond while management disabled