loadtest prometheus ipv6 pod support similar to ce6f3fe

Author: Martin Linkhorst

test/e2e/loadtest/client/prom-configmap.yaml

@@ -57,10 +57,18 @@ data:
         action: replace
         target_label: __metrics_path__
         regex: (.+)
+      # If __address__ is ipv6, update ipv6 adress with []
+      # https://github.com/prometheus/prometheus/issues/14656
+      - source_labels: [__address__]
+        regex: '\[?([0-9a-fA-F:]+:[0-9a-fA-F:]+)\]?(:\d+)?'
+        action: replace
+        target_label: __address__
+        replacement: '[$1]$2'
       - source_labels: [__address__, __meta_kubernetes_pod_annotation_prometheus_io_port]
         action: replace
-        regex: ([^:]+)(?::\d+)?;(\d+)
-        replacement: $1:$2
+        # match both ipv6 and ipv4
+        regex: ([0-9.]+|\[?[0-9a-fA-F:]+\]?)(:?\d+)?;(\d+)
+        replacement: $1:$3
         target_label: __address__
       - action: replace
         source_labels: ['__meta_kubernetes_pod_ip']