SDP-1280 Fix duplicate base_url in SDP helm chart

[marwen-abid]

This issue is encountered by the UNICC - because of a different post render validation used by flux
fluxcd/helm-controller#283

This was the way to reproduce the issue using kustomize.

Prepare kustomize.sh and kustomization.yaml

cat > kustomize.sh <<\EOT
#!/bin/bash
cat - > helm-generated-output.yaml
kustomize build . && rm helm-generated-output.yaml
EOT
chmod +x kustomize.sh

cat > kustomization.yaml <<\EOT
resources:
- helm-generated-output.yaml
apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
patches: []
EOT

Run helm template

helm template sdp . --post-renderer ./kustomize.sh -f myvalues.yaml

Error on duplicate BASE_URL

Error: error while running post render on files: error while running command /Users/.../dev/helm-charts/charts/stellar-disbursement-platform/kustomize.sh. error output:
Error: map[string]interface {}(nil): yaml: unmarshal errors:
  line 26: mapping key "BASE_URL" already defined at line 16
: exit status 1

Use --debug flag to render out invalid YAML

[marcelosalloum]

LGTM!