environment_search and disable searching options

[popsikle]

Re-surface of https://github.com/chef-cookbooks/ssh_known_hosts/pull/24 but can be merged, has tests, and allows for an array of environments to include.

[bdwyertech]

Should probably use AND -name:#{node.name} instead of NOT name:#{node.name}

See the warning here

• https://docs.chef.io/chef_search.html#operators

[lamont-granquist]

This should be done by using a wrapper cookbook, using the provided resource, and not using the included recipe.