4934 zfs-test for bug 4932

*** 1099,1108 ****
--- 1099,1111 ----
      path=opt/zfs-tests/tests/functional/cli_root/zpool_expand/zpool_expand_002_pos \
      mode=0555
  file \
      path=opt/zfs-tests/tests/functional/cli_root/zpool_expand/zpool_expand_003_neg \
      mode=0555
+ file \
+     path=opt/zfs-tests/tests/functional/cli_root/zpool_expand/zpool_expand_004_pos \
+     mode=0555
  file path=opt/zfs-tests/tests/functional/cli_root/zpool_export/cleanup \
      mode=0555
  file path=opt/zfs-tests/tests/functional/cli_root/zpool_export/setup mode=0555
  file \
      path=opt/zfs-tests/tests/functional/cli_root/zpool_export/zpool_export_001_pos \