Petascope_Insert scale level requests should resize only XY axes for 3D+ WMS layers

[Bang Pham Huu]

If a 3D+ WMS layer is imported with pyramid (downscaled collections), only grid XY axes should be resized on downscaled collections, not all grid axes.

e.g: a 3D original WMS layer (grid axes order: time, long, lat:

select sdom(c) from test_wms_3d_time_series_irregular as c

[0:13,0:6,0:5]

and a downscaled collection level 2 of this WMS layer, time axis (first grid axis) should not be downscaled:

select sdom(c) from test_wms_3d_time_series_irregular_2 as c

[0:6,0:3,0:5]