[GRASS-git] [OSGeo/grass-addons] c4a42f: i.landsat.import: partially revert #420 (#470)

[Veronica Andreo]

  Branch: refs/heads/master
  Home:   https://github.com/OSGeo/grass-addons
  Commit: c4a42fe4a001d474e92afcfb4b54f228790f9045
      https://github.com/OSGeo/grass-addons/commit/c4a42fe4a001d474e92afcfb4b54f228790f9045
  Author: Veronica Andreo <veroandreo at gmail.com>
  Date:   2021-03-09 (Tue, 09 Mar 2021)

  Changed paths:
    M grass7/imagery/i.landsat/i.landsat.import/i.landsat.import.py

  Log Message:
  -----------
  i.landsat.import: partially revert #420 (#470)

* partially revert #420 - gdal vsi is super slow and untar is anyway needed to get mtl file for i.landsat.toar - L1 data

* checks for is directory and if it is writable

Co-authored-by: Stefan Blumentrath <stefan.blumentrath at gmx.de>

* fix indentation and argument names