[#366] Test order depends on location

Signed-off-by: Dmitry Anurin <danurin@yadro.com>

src/frostfs_testlib/hooks.py

@@ -17,7 +17,7 @@ def pytest_add_frostfs_marker(items: list[pytest.Item]):
 @pytest.hookimpl(trylast=True)
 def pytest_collection_modifyitems(items: list[pytest.Item]):
     # The order of running tests corresponded to the suites
-    items.sort(key=lambda item: item.nodeid)
+    items.sort(key=lambda item: item.location[0])
 
     # Change order of tests based on @pytest.mark.order(<int>) marker
     def order(item: pytest.Item) -> int: