Fix auto generated resource link for DSL (#1400)
Fix auto generated resource link for DSL (#1400)

In case of IAP endpoint, the prefix is https instead of http. without the change the link will be resolved into 
http://https://foo.endpoints.bar.cloud.goog/pipeline
/assign @Ark-kun @hongye-sun
kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines,kubeflow/pipelines