Adds a lot more logging to quark ipam

RM8734

Implements a bunch of additional logging in quark IPAM. There may be
additional changes to come, but this should help tremendously when
debugging. Additionally, this broke quite a few IPAM tests as they were
attempting to get away using only key, checked fields from the models.
The naming scheme here is just a little misleading. Keys are just part of a dictionary, but you're iterating over full fledged dictionary items. Not a serious deal, just first impressions.

Also, you probably want to use .items() instead of .iteritems()