unbreak rios install & landsat's use of usgs

Tested with making a fresh venv, then activating it, then:

(.venv) tolsonlt:~/src/also-gips$ fmask_sentinel2makeAnglesImage.py # <-- imports rios
usage: fmask_sentinel2makeAnglesImage.py [-h] [-i INFILE] [-o OUTFILE]

optional arguments:
  -h, --help            show this help message and exit
  -i INFILE, --infile INFILE
                        Input sentinel-2 tile metafile
  -o OUTFILE, --outfile OUTFILE
                        Output angles image file

For usgs I did python -c 'import gips.data.landsat.landsat'; before, ImportError and heartbreak :broken_heart: , after, joy and rainbows. :rainbow:

Applied-GeoSolutions / gips

unbreak rios install & landsat's use of usgs #377