fix #13197: allow Duplicate to be used with SkipHead

[mtbc]

Fixes http://trac.openmicroscopy.org/ome/ticket/13197 and is checked by https://ci.openmicroscopy.org/job/OMERO-DEV-merge-integration-java/lastCompletedBuild/testngreports/integration/DuplicationTest/testDuplicateImageViaSkipHead/.

Enthusiastic manual testers may wish to read @ximenesuk's description in the ticket and avail themselves of #4574.

[ximenesuk]

The CLI command looks to now work okay with skiphead commands:

$ omero duplicate Project/Dataset:1 --report
omero.cmd.Duplicate Project/Dataset:1 ok
Steps: 9
Elapsed time: 0.733 secs.
Flags: []
Duplicates
  Instrument:53
  Objective:53
  ObjectiveSettings:53
  Dataset:53
  DatasetImageLink:53
  Channel:57-59
  Image:53
  LogicalChannel:57-59
  Pixels:53
  PlaneInfo:321-380
  ChannelBinding:57-59
  QuantumDef:53
  RenderingDef:53
  Fileset:53
  StatsInfo:15-17
$ omero duplicate Project/ProjectDatasetLink:1 --report
omero.cmd.Duplicate Project/ProjectDatasetLink:1 ok
Steps: 9
Elapsed time: 0.726 secs.
Flags: []
Duplicates
  Instrument:54
  Objective:54
  ObjectiveSettings:54
  Dataset:54
  DatasetImageLink:54
  ProjectDatasetLink:2
  Channel:60-62
  Image:54
  LogicalChannel:60-62
  Pixels:54
  PlaneInfo:381-440
  ChannelBinding:60-62
  QuantumDef:54
  RenderingDef:54
  Fileset:54
  StatsInfo:18-20

[ximenesuk]

Tests at https://ci.openmicroscopy.org/view/OMERO-DEV/job/OMERO-DEV-merge-integration-java/256/testngreports/integration/DuplicationTest/ passing. Good to merge.

[sbesson]

@mtbc: I think some of these changes conflict with the regions branch and will need to be manually resolved next time we merge develop into regions.

[mtbc]

Thank you @sbesson. Opened #4607 accordingly.