Merge branch 'release/0.2.1' into develop
Update dependency to vmfest 0.2.6 which supports VirtualBox 4.2.x.
Ignore inaccessible Machines

VirtualBox Machines that are not accessible can't be inspected. Pallet
assumes it can query all the nodes, but this breaks if the
node (machine) is not accessible.

 - Make pallet.compute/nodes return accessible nodes only.
 - unify the way in which machine accessibility is assessed.
Update to vmfest 0.2.7 to solve logging issues
Adjust logging
Add ComputeServiceProperties implementation
Add a ws profile
Force sequence with vec rather than doall
Updated release notes and readme for 0.2.2
[maven-release-plugin] prepare release pallet-vmfest-0.2.2
[maven-release-plugin] prepare for next development iteration
Merge branch 'release/0.2.2'