fix(public-api-gateway): add missing rabbitmq init container (#439)

Service is using rabbitmq but is missing init container that waits for
rabbitmq pod bootup

## 📝 Description
<!-- Describe your changes in detail -->

## ✅ Checklist
- [x] I have tested this change
- [ ] ~This change requires documentation update~

Author: radwo

public-api-gateway/helm/templates/dpl.yaml

@@ -40,6 +40,8 @@ spec:
         - name: {{ . }}
 {{- end }}
 {{- end }}
+      initContainers:
+{{ include "initContainers.waitForRabbitMQ" . | indent 8 }}
       automountServiceAccountToken: false
       containers:
         - name: "{{ .Chart.Name }}"
@@ -73,4 +75,4 @@ spec:
 {{- if .Values.resources }}
           resources:
 {{ toYaml .Values.resources | indent 13 }}
-{{- end }}
+{{- end }}