Pin pysal to 2.1.0

2.2.0 uses the network to download dataset on import which
is causing the unit test to fail (network access not permitted).

BUG=161473620

Author: rosbo

Dockerfile

@@ -43,8 +43,8 @@ RUN conda config --add channels conda-forge && \
     conda config --add channels pytorch && \
     conda config --add channels rapidsai && \
     # ^ rapidsai is the highest priority channel, default lowest, conda-forge 2nd lowest.
-    # b/161473620 pin required to prevent resolver from picking pysal 1.x.
-    conda install matplotlib basemap cartopy python-igraph imagemagick "pysal>=2.1.0" && \
+    # 161473620#comment7 pin required to prevent resolver from picking pysal 1.x., pysal 2.2.x is also downloading data on import.
+    conda install matplotlib basemap cartopy python-igraph imagemagick "pysal==2.1.0" && \
     # b/142337634#comment22 pin required to avoid torchaudio downgrade.
     conda install "pytorch>=1.5.0" "torchvision>=0.6.0" "torchaudio>=0.5.0" cpuonly && \
     /tmp/clean-layer.sh