Use an array as listen attribute instead of a hash #409
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This PR amends the logic introduced in #378 to use an array as attribute instead of a hash, as this will simplify using this cookbook in other recipes.
E.g., if a recipe wants httpd to listen on
addr:port
, it is much easier tojust set
instead of first having to check whether the listen hash does have the
key
addr
already and then either add it or update the port list.