add label to worker nodes

manifests/machinedeployment/cpx31.yaml

@@ -13,7 +13,7 @@ spec:
       node: exneuland
   strategy:
     rollingUpdate:
-      maxSurge: 1
+      maxSurge: 2
       maxUnavailable: 0
     type: RollingUpdate
   template:
@@ -43,5 +43,7 @@ spec:
             - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKKQwlVWSGICyOiVryEdEp8bR+ltCxSeikxPTRRgSssL cedi@ivy
             - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIC0YM2rlsOXq9OLCMynkPSn6sFkGGOWS9/p5rbcS/OUX cedi@ava
             - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIBW7KOtsdmhDszm0qaKdtxExNQqNnl6zJLz1vKRmmod2 cedi@liv
+          labels:
+            role: worker
       versions:
         kubelet: 1.21.3