Make sure all the quantum services log to seperate files.
Fix up metadat agent configuration.

This turns the 500 errors instances in Nova were getting into 404 instances.
Yay, progress!
Merge pull request #25 from VictorLowther/pull-req-release-pebbles-master-d2bf78a4d50c026a2d9d3e918e8280c70b543797

Make progress in getting the quantum metadata agent functional. [2/2]