grafana: update grafana dashboard for goaurrpc

• Show totals for the last 24 hours (instead of all time)
• Add total search requests pie chart

Example: https://i.imgur.com/Y52vTBe.png

Signed-off-by: moson-mo mo-son@mailbox.org

roles/grafana/files/dashboards/goaurrpc.json

@@ -81,7 +81,7 @@
             "properties": [
               {
                 "id": "unit",
-                "value": "dateTimeAsIsoNoDateIfToday"
+                "value": "dateTimeFromNow"
               }
             ]
           }