Hotfix to MKL-DNN pool2d tests (#22086)

python/paddle/fluid/tests/unittests/mkldnn/test_pool2d_mkldnn_op.py

@@ -26,6 +26,9 @@ def create_test_mkldnn_use_ceil_class(parent):
         def init_ceil_mode(self):
             self.ceil_mode = True
 
+        def init_data_type(self):
+            self.dtype = np.float32
+
     cls_name = "{0}_{1}".format(parent.__name__, "MKLDNNCeilModeCast")
     TestMKLDNNPool2DUseCeilCase.__name__ = cls_name
     globals()[cls_name] = TestMKLDNNPool2DUseCeilCase
@@ -41,6 +44,9 @@ def create_test_mkldnn_class(parent):
         def init_kernel_type(self):
             self.use_mkldnn = True
 
+        def init_data_type(self):
+            self.dtype = np.float32
+
     cls_name = "{0}_{1}".format(parent.__name__, "MKLDNNOp")
     TestMKLDNNCase.__name__ = cls_name
     globals()[cls_name] = TestMKLDNNCase
@@ -78,6 +84,9 @@ class TestAsymPad(TestPool2D_Op):
     def init_global_pool(self):
         self.global_pool = False
 
+    def init_data_type(self):
+        self.dtype = np.float32
+
 
 class TestAsymPadCase1(TestAsymPad):
     def init_paddings(self):