Add warning if firewall rule opens all traffic
Add warning if firewall rule opens all traffic

Warn when a firewall_rule resource appears to be opening all traffic. This should help avoid inadvertent logic bugs.

Closes #132.

chef-cookbooks/firewall,williamsjj/firewall,opscode-cookbooks/firewall,williamsjj/firewall,opscode-cookbooks/firewall,chef-cookbooks/firewall