Similar to qemuxml2argv and storagevolxml2argv, let's create some tests to ensure that the XML generates a consistent command line. Using the same list of pools as storagepoolxml2xmltest, start with the file system tests (fs, netfs, netfs-cifs, netfs-gluster). Signed-off-by: John Ferlan <jferlan@redhat.com> ACKed-by: Michal Privoznik <mprivozn@redhat.com>