Check rast_to_netcdf

[Schuch666]

double check for 2d / 3d etc
verify changes

[Schuch666]

fixed an issue, but a complete test still needed

[Schuch666]

Include 4 cases:

• 2d - XLAT XLONG
• 3d - XLAT XLONG TIME
• 3d - XLAT XLONG LEVEL
• 4d - XLAT XLONG LEVEL TIME (in this case sds_to_netcdf?)