Configure CI to use environment variables

Author: samwelkanda

.github/workflows/ci.yml

@@ -37,3 +37,7 @@ jobs:
       - name: Test with pytest
         run: |
           pipenv run pytest
+        env:
+          AZURE_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }}
+          AZURE_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }}
+          AZURE_CLIENT_SECRET: ${{ secrets.AZURE_CLIENT_SECRET }}