fix: update etcd grafana dashboard for etcd 3.5 (#442)

Author: keithf4

changelogs/fragments/425.yml

@@ -1,3 +1,4 @@
+---
 breaking_changes:
   - grafana - Update the dashboards to support Grafana 10.4 so that we're on an officially supported version of Grafana. This does potentially break backward compatibility with Grafana 9.x, so an update to Grafana 10.4 will be required with this version of pgMonitor.
 bugfixes:

changelogs/fragments/441.yml

@@ -0,0 +1,3 @@
+---
+bugfixes:
+ - grafana - Fix etcd dashboard to use new metric names in etcd 3.5

grafana/common/ETCD_Details.json

@@ -1589,7 +1589,7 @@
             "type": "prometheus",
             "uid": "PDC1078F23EBDF0E5"
           },
-          "expr": "rate(etcd_debugging_mvcc_put_total{exp_type=\"etcd\",job=~\"$job\"}[5m])",
+          "expr": "rate(etcd_mvcc_put_total{exp_type=\"etcd\",job=~\"$job\"}[5m])",
           "format": "time_series",
           "intervalFactor": 1,
           "legendFormat": "{{ job }} puts/s",
@@ -1600,7 +1600,7 @@
             "type": "prometheus",
             "uid": "PDC1078F23EBDF0E5"
           },
-          "expr": "rate(etcd_debugging_mvcc_delete_total{exp_type=\"etcd\",job=~\"$job\"}[5m])",
+          "expr": "rate(etcd_mvcc_delete_total{exp_type=\"etcd\",job=~\"$job\"}[5m])",
           "format": "time_series",
           "intervalFactor": 1,
           "legendFormat": "{{ job }} deletes/s",