Add planeInfo=true support to FakeReader (rebased onto develop)



This is the same as gh-795 but rebased onto develop.

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In order to investigate recent connection lost issues, being able
to generate a large number of plane info objects and insert them
into OMERO would be useful.

See: https://www.openmicroscopy.org/community/viewtopic.php?f=5&t=7351&start=20