Fix setting/s bug in handle_zero_reports

Author: eric-martin

lib/stackify/metrics/metrics_client.rb

@@ -157,9 +157,9 @@ def handle_zero_reports current_time
           agg.occurred_utc = current_time
           case aggregate.metric_type
           when Stackify::Metrics::METRIC_TYPES[:metric_last]
-            setting.autoreport_last_value_if_nothing_reported = false #do not allow this
+            settings.autoreport_last_value_if_nothing_reported = false #do not allow this
           when Stackify::Metrics::METRIC_TYPES[:counter]
-            setting.autoreport_last_value_if_nothing_reported = false #do not allow this
+            settings.autoreport_last_value_if_nothing_reported = false #do not allow this
           end
           if settings.autoreport_zero_if_nothing_reported
             agg.count = 1