Support variable data shape of non-sequence data. (#13482)

Author: qingqing01

python/paddle/fluid/data_feeder.py

@@ -71,7 +71,7 @@ def _feed_impl_(self, data, lod, lod_level):
 
     def done(self):
         arr = numpy.array(self.data, dtype=self.dtype)
-        if self.shape:
+        if self.shape and len(arr.shape) != len(self.shape):
             arr = arr.reshape(self.shape)
         t = core.LoDTensor()
         t.set(arr, self.place)