add running_chef_info to allow extracting info from a json file
Sample invokation (in dev environment, with sample file):
bundle exec rake crowbar:chef:running_chef_info file=/tmp/crowbar-dev-test/chef-server-running.json path=chef_server.lb.vip

127.0.0.1
Merge pull request #28 from aabes/pull-req-master-1648439fcdc74545b74a2326271b194a309b5f80

extract chef server running info [1/1]