started work on test harness
got simulated slaves to come online ok!
got harness working, for ssh hosts, and removed debug stuff
get rid of files that have been moved to ec2-harness plugin
purge the resources, which have been moved to ec2-harness plugin
remove dependency on mockito
Merge pull request #60 from hughperkins/master

Couple of access modifier tweaks to facilitate creation of ec2-harness plugin