fix seq tag model dist transpile

Author: typhoonzero

python/paddle/fluid/framework.py

@@ -965,6 +965,13 @@ def clone_variable(self, var):
         if var.type == core.VarDesc.VarType.STEP_SCOPES:
             ret_var = self.create_var(
                 name=var.name, persistable=var.persistable, type=var.type)
+        elif var.type == core.VarDesc.VarType.SELECTED_ROWS:
+            ret_var = self.create_var(
+                name=var.name,
+                shape=var.shape,
+                dtype=var.dtype,
+                type=var.type,
+                persistable=True)
         else:
             ret_var = self.create_var(
                 name=var.name,