Only clean up if the tests are successful.  Otherwise, leave the setup for debugging purposes.

Fixed:

/opt/dell/barclamps/nova/smoketest/00-deploy-nova-vm.test: line 260: [: =: unary operator expected

in the event that the disk probe ssh fails.
Merge pull request #214 from cdearborn/pull-req-release-pebbles-master-07aada52af97d9bfca558de286e64b9cbb55da2d

Fixed quantum floating IP smoketest failure [1/2]
Add support for Live migrations with Xen