Add support for events.scalar_metrics_iter_raw

apiserver/config/default/services/events.conf

@@ -17,6 +17,10 @@ events_retrieval {
 
     # the max amount of variants to aggregate on
     max_variants_count: 100
+
+    max_raw_scalars_size: 10000
+
+    scroll_id_key: "cTN5VEtWEC6QrHvUl0FTx9kNyO0CcCK1p57akxma"
 }
 
 # if set then plot str will be checked for the valid json on plot add