The number of passes remaining in the current
download attempt. Some agents require multiple
passes through the download file in order to
download a firmware image. This object indicates
the number of passes remaining, including the
current pass. The object is initialized by the
agent to the number of passes required to complete
the download when the corresponding instance of
adAOSDownloadStatus is set to 'active'. It is
decremented by one each time a pass completes.