[bitnami/kafka] Register targetPod in global context (#24391)

Signed-off-by: Andrés Bono <andresbono@vmware.com>

bitnami/kafka/templates/broker/svc-external-access.yaml

@@ -8,6 +8,7 @@ SPDX-License-Identifier: APACHE-2.0
 {{- $replicaCount := .Values.broker.replicaCount | int }}
 {{- range $i := until $replicaCount }}
 {{- $targetPod := printf "%s-broker-%d" (printf "%s" $fullname) $i }}
+{{- $_ := set $ "targetPod" $targetPod }}
 apiVersion: v1
 kind: Service
 metadata: