fix(helm): Add missing extraConfigs template volume mapping and fix t…

…ype error on template. (apache#13613)

* Add volume mapping for superset-extra-config

* Fix wrong type for VALUE, cannot use "." inside range.

Fixes Error: template: superset/templates/configmap-superset.yaml:30:16: executing "superset/templates/configmap-superset.yaml" at <.>: wrong type for value; expected chartutil.Values; got string

helm/superset/templates/configmap-superset.yaml

@@ -27,6 +27,6 @@ metadata:
 data:
 {{- range $path, $config := .Values.extraConfigs }}
   {{ $path }}: |
-{{ tpl $config . | indent 4 -}}
+{{- tpl $config $ | nindent 4 -}}
 {{- end -}}
 {{- end -}}

helm/superset/templates/deployment.yaml

@@ -75,6 +75,11 @@ spec:
             - name: superset-config
               mountPath: {{ .Values.configMountPath | quote }}
               readOnly: true
+          {{- if .Values.extraConfigs }}
+            - name: superset-extra-config
+              mountPath: {{ .Values.extraConfigMountPath | quote }}
+              readOnly: true
+          {{- end }}
           ports:
             - name: http
               containerPort: {{ .Values.service.port }}
@@ -97,3 +102,8 @@ spec:
         - name: superset-config
           secret:
             secretName: {{ tpl .Values.configFromSecret . }}
+        {{- if .Values.extraConfigs }}
+        - name: superset-extra-config
+          configMap:
+            name: {{ template "superset.fullname" . }}-extra-config
+        {{- end }}