DirectConvolutionLayer create image failure

Add implicit padding test on weights before the configure
Fix problem of considering left padding of weights when using cl image

Resolves: COMPMID-4493

Change-Id: I141d2de68e8bdfcbd6f18209db4f29fcc05305a1
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5689
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/tests/validation/Helpers.h b/tests/validation/Helpers.h
index e06d239..00e588e 100644
--- a/tests/validation/Helpers.h
+++ b/tests/validation/Helpers.h
@@ -233,12 +233,13 @@
 /** Add random padding along the X axis (between 1 and 16 columns per side) to all the input tensors.
  *  This is used in our validation suite in order to simulate implicit padding addition after configuring, but before allocating.
  *
- * @param[in] tensors     List of tensors to add padding to
- * @param[in] data_layout (Optional) Data layout of the operator
+ * @param[in] tensors        List of tensors to add padding to
+ * @param[in] data_layout    (Optional) Data layout of the operator
+ * @param[in] only_right_pad (Optional) Only right padding testing, in case of cl image padding
  *
  * @note This function adds padding to the input tensors only if data_layout == DataLayout::NHWC
  */
-void add_padding_x(std::initializer_list<ITensor *> tensors, const DataLayout &data_layout = DataLayout::NHWC);
+void add_padding_x(std::initializer_list<ITensor *> tensors, const DataLayout &data_layout = DataLayout::NHWC, bool only_right_pad = false);
 } // namespace validation
 } // namespace test
 } // namespace arm_compute