[bitnami/mongodb] Register targetPod in global context (#4642)

bitnami/mongodb/Chart.yaml

@@ -26,4 +26,4 @@ name: mongodb
 sources:
   - https://github.com/bitnami/bitnami-docker-mongodb
   - https://mongodb.org
-version: 10.1.3
+version: 10.1.4

bitnami/mongodb/templates/replicaset/external-access-svc.yaml

@@ -5,6 +5,7 @@
 
 {{- range $i, $e := until $replicaCount }}
 {{- $targetPod := printf "%s-%d" (printf "%s" $fullName) $i }}
+{{- $_ := set $ "targetPod" $targetPod }}
 ---
 apiVersion: v1
 kind: Service