Metrics: Disable toggle. Set default port to 9090

docs/examples/kustomize/base/configmap.yaml

@@ -5,6 +5,5 @@ metadata:
 data:
   server_url: $(PUBLIC_PROTO)://$(PUBLIC_HOSTNAME)
   listen_addr: "0.0.0.0:8080"
-  metrics_enabled: "true"
-  metrics_listen_addr: "127.0.0.1:9915"
+  metrics_listen_addr: "127.0.0.1:9090"
   ephemeral_node_inactivity_timeout: "30m"

docs/examples/kustomize/postgres/deployment.yaml

@@ -30,11 +30,6 @@ spec:
                 configMapKeyRef:
                   name: headscale-config
                   key: metrics_listen_addr
-            - name: METRICS_ENABLED
-              valueFrom:
-                configMapKeyRef:
-                  name: headscale-config
-                  key: metrics_enabled
             - name: DERP_MAP_PATH
               value: /vol/config/derp.yaml
             - name: EPHEMERAL_NODE_INACTIVITY_TIMEOUT

docs/examples/kustomize/sqlite/statefulset.yaml

@@ -31,11 +31,6 @@ spec:
                 configMapKeyRef:
                   name: headscale-config
                   key: metrics_listen_addr
-            - name: METRICS_ENABLED
-              valueFrom:
-                configMapKeyRef:
-                  name: headscale-config
-                  key: metrics_enabled
             - name: DERP_MAP_PATH
               value: /vol/config/derp.yaml
             - name: EPHEMERAL_NODE_INACTIVITY_TIMEOUT