Adds updates including compute [(#2436)](GoogleCloudPlatform/python-docs-samples#2436)

* Adds updates including compute

* Python 2 compat pytest

* Fixing weird \r\n issue from GH merge

* Put asset tests back in

* Re-add pod operator test

* Hack parameter for k8s pod operator

Author: gguuss

samples/to_dataframe/requirements.txt

@@ -1,6 +1,6 @@
-google-auth==1.6.2
+google-auth==1.6.3
 google-cloud-bigquery-storage==0.7.0
 google-cloud-bigquery==1.20.0
 pyarrow==0.14.1
-ipython==7.2.0
-pandas==0.25.1
+ipython==7.8.0
+pandas==0.25.1