[COOK-3709] changing node['java']['jdk_dir'] to node['java']['java_home'] to match opscode-cookbooks/java@63e3908163
[COOK-3710] making the winsw url an attribute
[COOK-3711] adding prefix_start_slave_cmd and suffix_start_slave_cmd attributes for setting those options on slaves with ssh agents
Merge remote-tracking branch 'origin/COOK-3710' into HEAD
Merge remote-tracking branch 'origin/COOK-3711' into HEAD