There is no need to repeat the shortName, since it's
already present in the directory path.

Also use just 'fs' instead of 'virtiofsd'.

https://bugzilla.redhat.com/show_bug.cgi?id=1816577Signed-off-by: NJán Tomko <jtomko@redhat.com>
Suggested-by: NAndrea Bolognani <abologna@redhat.com>
Reviewed-by: NMichal Privoznik <mprivozn@redhat.com>