Use `key?` instead of `has_key?`

lib/gitlab/prometheus/additional_metrics_parser.rb

@@ -14,14 +14,14 @@ module Gitlab
       end
 
       def metric_from_entry(entry)
-        missing_fields = [:title, :required_metrics, :weight, :queries].select { |key| !entry.has_key?(key) }
+        missing_fields = [:title, :required_metrics, :weight, :queries].select { |key| !entry.key?(key) }
         raise ParsingError.new("entry missing required fields #{missing_fields}") unless missing_fields.empty?
 
         Metric.new(entry[:title], entry[:required_metrics], entry[:weight], entry[:y_label], entry[:queries])
       end
 
       def group_from_entry(entry)
-        missing_fields = [:group, :priority, :metrics].select { |key| !entry.has_key?(key) }
+        missing_fields = [:group, :priority, :metrics].select { |key| !entry.key?(key) }
         raise ParsingError.new("entry missing required fields #{missing_fields}") unless missing_fields.empty?
 
         group = MetricGroup.new(entry[:group], entry[:priority])

lib/gitlab/prometheus/queries/query_additional_metrics.rb

@@ -44,7 +44,7 @@ module Gitlab
         def process_query(context, query)
           query_with_result = query.dup
           query_with_result[:result] =
-            if query.has_key?(:query_range)
+            if query.key?(:query_range)
               client_query_range(query[:query_range] % context, start: context[:timeframe_start], stop: context[:timeframe_end])
             else
               client_query(query[:query] % context, time: context[:timeframe_end])