plugin/discovery: use refreshonly
on the untar exec
#822
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Previously, if you change the
image_name
(such as for updating the Foreman Discovery Image version), the new tar file would be downloaded but not untarred because the content of the previous tar file would be there and pass thecreates
check.If we use
refreshonly
instead ofcreates
, the untar exec will be executed when the tar file is updated, as expected.See also: #774 (comment)