status: print a warning about locked DVC files

Signed-off-by: Ruslan Kuprieiev <[email protected]>

dvc/project.py

@@ -360,6 +360,11 @@ class Project(object):
             stages = self.active_stages()
 
         for stage in stages:
+            if not stage.locked:
+                msg = 'DVC file \'{}\' is locked. Its dependecies are not ' \
+                      'going to be shown in status output.'
+                self.logger.warn(msg.format(stage.relpath))
+
             status.update(stage.status())
 
         return status