deploy-templates/templates/bp-grouping-configmap.yaml

{{- $configMap := (lookup "v1" "ConfigMap" .Release.Namespace .Values.bpGrouping.configName) }}
apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ .Values.bpGrouping.configName }}
{{- if $configMap }}
data:
{{ $configMap.data | toYaml | nindent 2 }}
{{- else }}
data:
  bp-grouping.yml: |
    bp-grouping: {}
{{- end -}}