Add ethnic category to the food generator (#2361)

* Add food ethnic category to the faker gem

* Add food ethnic type for next faker version

doc/default/food.md

@@ -7,6 +7,8 @@ Faker::Food.description #=> "Three eggs with cilantro, tomatoes, onions, avocado
 
 Faker::Food.dish #=> "Caesar Salad"
 
+Faker::Food.ethnic_category #=> "Indian cuisine"
+
 Faker::Food.fruits #=> "Peaches"
 
 Faker::Food.ingredient #=> "Adzuki Beans"

lib/faker/default/food.rb

@@ -108,6 +108,19 @@ def measurement
       def metric_measurement
         fetch('food.metric_measurements')
       end
+
+      ##
+      # Retrieves ethnic category
+      #
+      # @return [String]
+      #
+      # @example
+      #   Faker::Food.ethnic_category #=> "Indian cuisine"
+      #
+      # @faker.version next
+      def ethnic_category
+        fetch('food.ethnic_category')
+      end
     end
   end
 end