keep metrics as port name

Co-authored-by: Furkat Gofurov <[email protected]>

Author: Arakos

hack/charts/cluster-api-operator/templates/deployment.yaml

@@ -103,7 +103,7 @@ spec:
           {{ $diagnosticsPort = ( split ":" $.Values.diagnosticsAddress)._1 }}
           {{- end }}
         - containerPort: {{ $diagnosticsPort | int }}
-          name: diagnostics
+          name: metrics
           protocol: TCP
           {{- end }}
         {{- with .Values.resources.manager }}