Update controller-manager-patch.yaml

Author: Cecile Robert-Michon

hack/observability/opentelemetry/controller-manager-patch.yaml

@@ -9,7 +9,7 @@ spec:
       containers:
         - name: manager
           args:
-            - "--metrics-bind-addr=127.0.0.1:8080"
+            - "--metrics-bind-addr=:8080"
             - "--leader-elect"
             - "--feature-gates=MachinePool=${EXP_MACHINE_POOL:=false},AKS=${EXP_AKS:=false}"
             - "--enable-tracing"