[bitnami/drupal] Add support for ingressClassName (#7512)

Inspired by

https://github.com/bitnami/charts/pull/6848

bitnami/drupal/templates/ingress.yaml

@@ -18,6 +18,9 @@ metadata:
     {{- include "common.tplvalues.render" ( dict "value" .Values.commonAnnotations "context" $ ) | nindent 4 }}
     {{- end }}
 spec:
+  { { - if and .Values.ingress.ingressClassName (eq "true" (include "common.ingress.supportsIngressClassname" .)) } }
+  ingressClassName: { { .Values.ingress.ingressClassName | quote } }
+  { { - end } }
   rules:
     {{- if .Values.ingress.hostname }}
     - host: {{ .Values.ingress.hostname }}