hash changed on at least some of the COPDEM files

[fmaussion]

To reproduce:

from oggm import utils, cfg

cfg.initialize()
cfg.PATHS['working_dir'] = utils.get_temp_dir('tests_dem')

url = 'ftps://cdsdata.copernicus.eu:990/datasets/COP-DEM_GLO-90-DGED/2019_1/DEM1_SAR_DGE_90_20130605T075845_20140727T081758_ADS_000000_9503.DEM.tar'
utils.download_with_authentication(url, 'spacedata.copernicus.eu')

@TimoRoth could you have a look when you have time?

[fmaussion]

It seems that all files are affected. I checked one file randomly and the size did change by a minuscule amounts of bytes... The data was the same...

[fmaussion]

This is still an issue - we might have to re-download all the files in /home/data/download/cdsdata.copernicus.eu/datasets/COP-DEM_GLO-90-DGED/2019_1 -> that's 27Gb. @TimoRoth if I give you the credentials, could you maybe take care of it?