Use GCE volume support in brooklyn-blockstore
Switched to volume manager support methods in blockstore project
Api implementations of getForestCounts and removeNodeFromCluster
Update API logging and poms
Expose forest count stats as attributes on forest

Expose each node's API connection through driver and entity interfaces
Incorporate review comments from @richardcloudsoft

* Explain localhost pom profile
* Increased forest counts poll to match forest status poll
* Fixed attachAndMount[Existing]Volume
Merge pull request #54 from cloudsoft/gce-volumes

GCE volumes