XXXX Add ZFS test for illumos 4986

*** 432,442 ****
  [/opt/zfs-tests/tests/functional/redundancy]
  tests = ['redundancy_001_pos', 'redundancy_002_pos', 'redundancy_003_pos']
  
  [/opt/zfs-tests/tests/functional/refquota]
  tests = ['refquota_001_pos', 'refquota_002_pos', 'refquota_003_pos',
!     'refquota_004_pos', 'refquota_005_pos', 'refquota_006_neg']
  
  [/opt/zfs-tests/tests/functional/refreserv]
  tests = ['refreserv_001_pos', 'refreserv_002_pos', 'refreserv_003_pos',
      'refreserv_004_pos', 'refreserv_005_pos']
  
--- 432,443 ----
  [/opt/zfs-tests/tests/functional/redundancy]
  tests = ['redundancy_001_pos', 'redundancy_002_pos', 'redundancy_003_pos']
  
  [/opt/zfs-tests/tests/functional/refquota]
  tests = ['refquota_001_pos', 'refquota_002_pos', 'refquota_003_pos',
!     'refquota_004_pos', 'refquota_005_pos', 'refquota_006_neg',
!     'refquota_007_pos']
  
  [/opt/zfs-tests/tests/functional/refreserv]
  tests = ['refreserv_001_pos', 'refreserv_002_pos', 'refreserv_003_pos',
      'refreserv_004_pos', 'refreserv_005_pos']