Support download of template which are registered as Direct Download

##### ISSUE TYPE

* Improvement Request

##### COMPONENT NAME

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Component: template, kvm

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##### CLOUDSTACK VERSION

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4.18

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##### SUMMARY

Support download of template which are registered as Direct Download

Steps to reproduce the issue

1. Register a qcow2 template > select the Direct Download option

2. Launch a vm from the registered template

3. Try to download the template ( images> template> Download template

4. The download of template fails

Screenshot



Expected behavior
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Currently we are storing the direct downloaded templates in primary storage

Cloudstack supports the download of templates only if they are present in the seconday storage.

There could be use-case scenario if a user wants to download the original template which is registered as direct download

Comienza siguiendo el flujo de trabajo de descarga de plantillas descrito en el issue y compara cómo se gestionan las plantillas del almacenamiento primario con las del almacenamiento secundario. Reproduce el fallo usando una plantilla qcow2 registrada con Direct Download y, a continuación, verifica que la descarga de la plantilla original funciona correctamente sin romper la ruta existente de almacenamiento secundario.

Escrito por el modelo de indexación a partir del texto del issue.