attempt at using python3 for databricks artifact generation feast-dev#2

.github/workflows/docker_build_test_push.yml

@@ -140,7 +140,7 @@ jobs:
     # databricks provider DBFS bug)
     - uses: actions/setup-python@v2
       with:
-        python-version: ['2.x', '3.x']
+        python-version: '2.x'
 
     - name: Upload Spark JARs
       run: |
@@ -211,15 +211,18 @@ jobs:
       run: set -e make compile-protos-python
 
     - name: Upload Python egg to Databricks
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.x'
       run: |
         set -ex
         git fetch --unshallow
         git stash
         export DATABRICKS_HOST="$TF_VAR_databricks_workspace_url"
         export DATABRICKS_TOKEN=$(terraform output databricks_token)
         set -x
-        pip3 install databricks-cli
-        python3 setup.py bdist_egg
+        pip install databricks-cli
+        python setup.py bdist_egg
         dbfs mkdirs dbfs:/pypi/feast/
         dbfs cp dist/*.egg dbfs:/pypi/feast/
       working-directory: sdk/python