Update YOLOv5 YAMLs to 'u' YAMLs (#800)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

ultralytics/hub/utils.py

@@ -175,7 +175,9 @@ class Traces:
             cfg = vars(cfg)  # convert type from IterableSimpleNamespace to dict
             if not all_keys:  # filter cfg
                 include_keys = {'task', 'mode'}  # always include
-                cfg = {k: v for k, v in cfg.items() if v != DEFAULT_CFG_DICT.get(k, None) or k in include_keys}
+                cfg = {
+                    k: (v.split(os.sep)[-1] if isinstance(v, str) and os.sep in v else v)
+                    for k, v in cfg.items() if v != DEFAULT_CFG_DICT.get(k, None) or k in include_keys}
             trace = {'uuid': SETTINGS['uuid'], 'cfg': cfg, 'metadata': self.metadata}
 
             # Send a request to the HUB API to sync analytics