Fix config_hash call to the proposal_config
new_config in apply_pre_chef is a proposal_config and not a proposal.
Don't call active_config, it is the active config.
The test on the floating address addition isn't working.
The floating IP range excludes the subnet and broadcast addresses now.
This causes the test to fail.  Update the test check for a real address.
Merge pull request #103 from galthaus/pull-req-master-e4517a40898eab087212433a7dea764948978fc6

sets of changes and unit tests that seem to get nova running somewhat [6/6]