Cloud masking and scene selection for mosaic

[BaptisteVandecrux]

Since we are not removing cloudy pixel from the scenes any more, the selection of scenes stitched in the mosaic is now only based on the scenes’ SZA.
In the previous SICE version, cloudy pixels of a scene with low SZA were not used for mosaicking, and the algorithm looked for another scene, of higher SZA, but where cloud-free pixels would be available. This allowed to “rescue” some cloudy pixels using another scene of higher SZA. We could think about a way to keep this behaviour without replacing pixels by NaN.

[BaptisteVandecrux]

Would it be about replacing "SZA" by "SZA_CM" in these lines:

SICE/dm.grass.sh

Lines 70 to 73 in b18b5de

	# find the array index with the minimum SZA
	# Array for indexing, list for using in GRASS
	sza_arr=($(g.list -m type=raster pattern=SZA mapset=*))
	sza_list=$(g.list -m type=raster pattern=SZA mapset=* separator=comma)