Github user ustcweizhou commented on the issue:
https://github.com/apache/cloudstack/pull/1818
@karuturi in my understanding, the zoneid is not necessary if template is
not cross-zone.
If template is cross-zone, the zoneid should be passed if template is
deleted from the 'Zones' tab (it means template will be deleted from the zone),
Otherwise, the template will be deleted from all zones (this is why I suggest
to add the new button in template details page, then the zoneid will not be set)
Please correct me if I am wrong.
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