make the human? method part of the base api class

Fixes #5766

logstash-core/lib/logstash/api/commands/hot_threads_reporter.rb

@@ -1,7 +1,7 @@
 # encoding: utf-8
 
 class HotThreadsReport
-  STRING_SEPARATOR_LENGHT = 80.freeze
+  STRING_SEPARATOR_LENGTH = 80.freeze
   HOT_THREADS_STACK_TRACES_SIZE_DEFAULT = 10.freeze
 
   def initialize(cmd, options)
@@ -14,7 +14,7 @@ class HotThreadsReport
   def to_s
     hash = to_hash[:hot_threads]
     report =  "#{I18n.t("logstash.web_api.hot_threads.title", :hostname => hash[:hostname], :time => hash[:time], :top_count => @thread_dump.top_count )} \n"
-    report << '=' * STRING_SEPARATOR_LENGHT
+    report << '=' * STRING_SEPARATOR_LENGTH
     report << "\n"
     hash[:threads].each do |thread|
       thread_report = "#{I18n.t("logstash.web_api.hot_threads.thread_title", :percent_of_cpu_time => thread[:percent_of_cpu_time], :thread_state => thread[:state], :thread_name => thread[:name])} \n"
@@ -23,7 +23,7 @@ class HotThreadsReport
         thread_report << "\t#{trace}\n"
       end
       report << thread_report
-      report << '-' * STRING_SEPARATOR_LENGHT
+      report << '-' * STRING_SEPARATOR_LENGTH
       report << "\n"
     end
     report

logstash-core/lib/logstash/api/modules/base.rb

@@ -34,6 +34,11 @@ module LogStash
           text = as == :string ? "" : {}
           respond_with(text, :as => as)
         end
+
+        protected
+        def human?
+          params.has_key?("human") && (params["human"].nil? || as_boolean(params["human"]) == true)
+        end
       end
     end
   end

logstash-core/lib/logstash/api/modules/node.rb

@@ -26,11 +26,6 @@ module LogStash
           selected_fields = extract_fields(params["filter"].to_s.strip)
           respond_with node.all(selected_fields)
         end
-
-        protected
-        def human?
-          params.has_key?("human") && (params["human"].nil? || as_boolean(params["human"]) == true)
-        end
       end
     end
   end