Made check for modified environment less strict

Now if the order of the environment variables is allowed to change, as
long as their key and value are the same

python/tests/conftest.py

@@ -36,5 +36,5 @@ def env_save():
     environment_pre = [(key, val) for key, val in os.environ.items() if key != "PYTEST_CURRENT_TEST"]
     yield
     environment_post = [(key, val) for key, val in os.environ.items() if key != "PYTEST_CURRENT_TEST"]
-    if environment_pre != environment_post:
+    if set(environment_pre) != set(environment_post):
         raise EnvironmentError("Your environment has changed after that test, please reset")