Set conda channel priority to 'strict' to avoid using wrong channels.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>

.gitlab-ci.yml

@@ -57,12 +57,16 @@ test_py_tools_ds_install:
     - source /root/miniconda3/bin/activate
     - conda create -y -q --name py_tools_ds_testinstall python=3
     - source activate py_tools_ds_testinstall
+
+      # avoid package incompatibilities due to usage of wrong channels
+    - conda config --set channel_priority strict  # otherwise gdal or libgdal may be installed from defaults channel
+
     # resolve some requirements with conda
-    - conda install --yes -q -c conda-forge numpy gdal scikit-image pyproj rasterio shapely geopandas pyresample>=1.11.0
-    - conda install --yes -q -c conda-forge libgdal ncurses # Fix for libgdal installed from defaults channel causing libkea.so.1.4.7: cannot open shared object file: No such file or directory
-#    - conda install --yes -q -c conda-forge kealib  # fix for libkea.so.1.4.7: cannot open shared object file: No such file or directory
+    - conda install --yes -q -c conda-forge numpy gdal scikit-image pyproj rasterio shapely geopandas
+
     # run installer
     - python setup.py install
+
     # test if its importable
     - cd ..
     - pwd