fix not_if statement in dns recipe.
Merge pull request #582 from continuuity/feature/fix-dns-cookbook

fix not_if statement in dns recipe.
Merge remote-tracking branch 'origin/develop' into feature/refactor-l2c

Conflicts:
	provisioner/worker/plugins/automators/chef_solo_automator/chef_solo_automator/cookbooks/coopr_dns/recipes/dnsimple.rb