chore(monitor-snapshot/master): update files from upstreams (#1052)

Author: ti-chi-bot

monitor-snapshot/master/ansible-monitor.tar.gz

@@ -395,6 +395,13 @@
               "intervalFactor": 2,
               "legendFormat": "total",
               "refId": "B"
+            },
+            {
+              "expr": "sum(rate(tidb_server_slow_query_total{k8s_cluster=\"$k8s_cluster\", tidb_cluster=\"$tidb_cluster\", instance=~\"$instance\"}[1m]))",
+              "format": "time_series",
+              "intervalFactor": 2,
+              "legendFormat": "SlowQuery",
+              "refId": "C"
             }
           ],
           "thresholds": [],