Fixes #35, implement fqdn_resolves? method
Fixes #35, implement fqdn_resolves? method

This also fixes this issue:

- https://github.com/chef-cookbooks/chef-server/issues/105

naumchenko/chef-ingredient,surya85/devops,chef-cookbooks/chef-ingredient,surya85/devops,GannettDigital/chef-ingredient,vinyar/chef-ingredient,surya85/devops,surya85/devops,surya85/devops,surya85/devops,surya85/devops,surya85/devops,poliva83/chef-ingredient,chef-cookbooks/chef-ingredient,vinyar/chef-ingredient,surya85/devops,surya85/devops,GannettDigital/chef-ingredient