feat(sra_client.py): Test deployed pkg via tox

python-packages/sra_client/tox.ini

@@ -8,3 +8,17 @@ deps=-r{toxinidir}/requirements.txt
 commands=
    nosetests \
       []
+
+[testenv:run_tests_against_test_deployment]
+commands =
+    # install dependencies from real PyPI
+    pip install mypy_extensions pytest
+    # install package-under-test from test PyPI
+    pip install --index-url https://test.pypi.org/legacy/ 0x-sra-client
+    pytest test
+
+[testenv:run_tests_against_deployment]
+deps=pytest
+commands =
+    pip install 0x-sra-client
+    pytest test