[skip ci]Update grafana config (#11835)

Signed-off-by: Weida Zhu <weida.zhu@zilliz.com>

deployments/monitor/grafana/milvus-dashboard.json

@@ -16,7 +16,7 @@
   "gnetId": null,
   "graphTooltip": 0,
   "id": 27,
-  "iteration": 1636629445699,
+  "iteration": 1636973441002,
   "links": [],
   "panels": [
     {
@@ -3326,7 +3326,7 @@
           "label": null,
           "logBase": 1,
           "max": null,
-          "min": null,
+          "min": "0",
           "show": true
         },
         {
@@ -4399,7 +4399,7 @@
       "dashLength": 10,
       "dashes": false,
       "datasource": "$datasource",
-      "description": "",
+      "description": "Total cpu usage of all milvus components",
       "fieldConfig": {
         "defaults": {},
         "overrides": []
@@ -4565,11 +4565,12 @@
       },
       "yaxes": [
         {
+          "decimals": null,
           "format": "bytes",
           "label": null,
           "logBase": 1,
           "max": null,
-          "min": null,
+          "min": "0",
           "show": true
         },
         {
@@ -4578,7 +4579,7 @@
           "logBase": 1,
           "max": null,
           "min": null,
-          "show": true
+          "show": false
         }
       ],
       "yaxis": {
@@ -4689,7 +4690,7 @@
       "dashLength": 10,
       "dashes": false,
       "datasource": "$datasource",
-      "description": "cpu usage of process",
+      "description": "process cpu usage",
       "fieldConfig": {
         "defaults": {},
         "overrides": []
@@ -5281,7 +5282,7 @@
       "dashLength": 10,
       "dashes": false,
       "datasource": "$datasource",
-      "description": "",
+      "description": "Next GC Bytes",
       "fieldConfig": {
         "defaults": {},
         "overrides": []
@@ -5377,7 +5378,7 @@
       "dashLength": 10,
       "dashes": false,
       "datasource": "$datasource",
-      "description": "Number of Process Opened Fds",
+      "description": "Number of process opened fds",
       "fieldConfig": {
         "defaults": {},
         "overrides": []
@@ -5431,7 +5432,7 @@
       "timeFrom": null,
       "timeRegions": [],
       "timeShift": null,
-      "title": "Number of process opened fds",
+      "title": "Process Opened Fds",
       "tooltip": {
         "shared": true,
         "sort": 0,
@@ -6141,7 +6142,7 @@
     ]
   },
   "time": {
-    "from": "now-30m",
+    "from": "now-24h",
     "to": "now"
   },
   "timepicker": {
@@ -6174,5 +6175,5 @@
   "timezone": "browser",
   "title": "Milvus2.0",
   "uid": "uLf5cJ3Gz",
-  "version": 156
+  "version": 164
 }