updated example chef.properties with validation cert stanza
updated example chef.properties with validation cert stanza

ngkim/cloudify-recipes,ngkim/cloudify-recipes,CloudifySource/cloudify-recipes,ngkim/cloudify-recipes,ngkim/cloudify-recipes,CloudifySource/cloudify-recipes,ngkim/cloudify-recipes,CloudifySource/cloudify-recipes,CloudifySource/cloudify-recipes,ngkim/cloudify-recipes,ngkim/cloudify-recipes,CloudifySource/cloudify-recipes,CloudifySource/cloudify-recipes