Cookstyle 6.2.9 Fixes

Issues found and resolved with: libraries/helpers.rb

 - 31:18 convention: Style/HashEachMethods - Use `each_key` instead of `keys.each`.
Signed-off-by: Xorima Bot <xorimabot@avon-lea.co.uk>

CHANGELOG.md

 # Changelog
 
+## Unreleased
+
+- resolved cookstyle error: libraries/helpers.rb:31:18 convention: `Style/HashEachMethods`
+
 ## [Unreleased]
 
 ### Added

libraries/helpers.rb

@@ -28,7 +28,7 @@ class Chef
       def self.object_to_ossec(object)
         case object
         when Hash
-          object.keys.each do |k|
+          object.each_key do |k|
             if k == 'content!'
               object[:content!] = object_to_ossec(object.delete(k))
             else