Fix linstor metrics node label (#1335)

Signed-off-by: Andrei Kvapil <kvapss@gmail.com>

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## What this PR does


### Release note

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```release-note
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packages/system/linstor/templates/podscrape.yaml

@@ -14,7 +14,7 @@ spec:
     - replacement: linstor-controller
       targetLabel: job
     - sourceLabels: [__meta_kubernetes_pod_node_name]
-      targetLabel: controller_node
+      targetLabel: node
     - targetLabel: tier
       replacement: cluster
   selector:
@@ -37,7 +37,7 @@ spec:
     - replacement: linstor-satellite
       targetLabel: job
     - sourceLabels: [__meta_kubernetes_pod_node_name]
-      targetLabel: node
+      targetLabel: controller_node
     - targetLabel: tier
       replacement: cluster
   selector: