Update kraft metric rules

Author: hvan

api/assets/kafka/jmx-exporter.yml

@@ -241,8 +241,8 @@ rules:
   - pattern: java.lang.+
   - pattern: java.nio.+
   # Export kraft metrics
-  - pattern: kafka.server<type=raft-metrics, name=(.+)><>Value
-    name: kafka_server_raft_metrics_$1
-    cache: true
-    labels: {}
-    type: GAUGE
+  - pattern: "kafka.server<type=raft-metrics, name=current-state>"
+    name: "kafka_server_raft_metrics_current_state"
+    labels:
+      status: "$1"
+    value: 1