Revert removal of [test] in cases where it is still needed.

Author: nathanjmcdougall

.github/workflows/ci.yml

@@ -52,7 +52,7 @@ jobs:
             pip install -r $REQUIREMENTS
           fi
 
-          python -m pip install -e .
+          python -m pip install -e .[test]
 
       - name: Set up Cloud SDK
         uses: google-github-actions/setup-gcloud@v0
@@ -120,7 +120,7 @@ jobs:
         run: |
           python -m pip install --upgrade pip
 
-          python -m pip install -e .
+          python -m pip install -e .[test]
       - name: Run tests
         run: |
           # TODO: better way to disable all cloud backend tests?