fix(examples): use annotations instead of labels on kubernetes seed pods

examples/kubernetes-pod-exec-time/seed/pod.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: pod-1
-  labels:
+  annotations:
     openmeter.io/subject: customer-1
     data.openmeter.io/customer_group: platinum
 spec:
@@ -16,9 +16,9 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: pod-2
-  labels:
-    openmeter.io/subject: customer-2
-    data.openmeter.io/customer_group: gold
+  annotations:
+    openmeter.io/subject: customer-1
+    data.openmeter.io/customer_group: platinum
 spec:
   containers:
     - name: busybox
@@ -30,9 +30,9 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: pod-3
-  labels:
-    openmeter.io/subject: customer-3
-    data.openmeter.io/customer_group: platinum
+  annotations:
+    openmeter.io/subject: customer-2
+    data.openmeter.io/customer_group: gold
 spec:
   containers:
     - name: busybox
@@ -44,9 +44,9 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: pod-4
-  labels:
-    openmeter.io/subject: customer-4
-    data.openmeter.io/customer_group: platinum
+  annotations:
+    openmeter.io/subject: customer-3
+    data.openmeter.io/customer_group: gold
 spec:
   containers:
     - name: busybox
@@ -58,8 +58,8 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: pod-5
-  labels:
-    openmeter.io/subject: customer-5
+  annotations:
+    openmeter.io/subject: customer-3
     data.openmeter.io/customer_group: gold
 spec:
   containers:
@@ -72,9 +72,9 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: pod-6
-  labels:
-    openmeter.io/subject: customer-6
-    data.openmeter.io/customer_group: platinum
+  annotations:
+    openmeter.io/subject: customer-3
+    data.openmeter.io/customer_group: gold
 spec:
   containers:
     - name: busybox