Modify clouderamanager to use the new disk claiming mechanism.
Merge pull request #126 from VictorLowther/pull-req-release-pebbles-master-b33d4f791a3432f0d3d2d4ea58a1c80f9ce6c95e

https://github.com/crowbar/barclamp-clouderamanager/pull/126

Merged by devtool for cloudsleuth