Github user remibergsma commented on the pull request:
https://github.com/apache/cloudstack/pull/1101#issuecomment-160296390
@ustcweizhou LGTM, tested it and works as expected.
Minor comment: the first item in the list is empty (it will then keep the
same template), rest of the items are the available templates. Should we make
that first entry more explicit ("keep same template" or so)?

Tried both and they work fine:

Thanks!
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