recipe_engine: change resource API to use repo root

recipe_modules/path/api.py

Index: recipe_modules/path/api.py
diff --git a/recipe_modules/path/api.py b/recipe_modules/path/api.py
index 8bf32a6d2225f146edbccc92ea01a83fcddceb53..1a0661f39b025c24b85bdc4b6fd340df21c07f57 100644
--- a/recipe_modules/path/api.py
+++ b/recipe_modules/path/api.py
@@ -30,11 +30,11 @@ def PathToString(api, test):
         base_path = repr(path.base)
       else:  # pragma: no cover
         base_path = os.path.dirname(path.base.module.__file__)
-    elif isinstance(path.base, config_types.PackageBasePath):
+    elif isinstance(path.base, config_types.PackageRepoBasePath):
       if test.enabled:
         base_path = repr(path.base)
       else:  # pragma: no cover
-        base_path = path.base.package.recipes_dir
+        base_path = path.base.package.repo_root
     else:  # pragma: no cover
       raise NotImplementedError('PathToString not implemented for %s' %
                                 path.base.__class__.__name__)