Merge pull request #7976 from zalando-incubator/fix/kubelet-cadvisor-image-label

fix: missing image label that we need for versioned metrics

Author: gargravarr

cluster/manifests/prometheus/configmap.yaml

@@ -442,7 +442,7 @@ data:
         replacement: $1:10250
       metric_relabel_configs:
       - action: labeldrop
-        regex: "(name|id|image)"
+        regex: "(name|id)"
       - action: replace
         source_labels: ['container']
         target_label: container_name