IVGCVSW-5548 Fix delegate ElementwiseUnary tests for CpuAcc/GpuAcc

 * Apply new test suite structure to be able to filter for backends
   For ElementwiseBinary and ElementwiseUnary
 * Add tolerance to data comparison

Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Change-Id: Iccabb68f316c93533e1076da5822ebc199e23739
diff --git a/delegate/src/test/Convolution2dTest.cpp b/delegate/src/test/Convolution2dTest.cpp
index 4e9377a..f8ee7b1 100644
--- a/delegate/src/test/Convolution2dTest.cpp
+++ b/delegate/src/test/Convolution2dTest.cpp
@@ -220,7 +220,7 @@
                                             biasValues);
 }
 
-TEST_SUITE("Convolution2dTest_CpuRef")
+TEST_SUITE("Convolution2dTest_CpuRefTests")
 {
 
 TEST_CASE ("Conv2DWithBiases_Fp32_CpuRef_Test")
@@ -249,7 +249,7 @@
 
 } //End of TEST_SUITE("Convolution2dTest_CpuRef")
 
-TEST_SUITE("Convolution2dTest_CpuAcc")
+TEST_SUITE("Convolution2dTest_CpuAccTests")
 {
 
 TEST_CASE ("Conv2DWithBiases_Fp32_CpuAcc_Test")
@@ -278,7 +278,7 @@
 
 } //End of TEST_SUITE("Convolution2dTest_CpuAcc")
 
-TEST_SUITE("Convolution2dTest_GpuAcc")
+TEST_SUITE("Convolution2dTest_GpuAccTests")
 {
 
 TEST_CASE ("Conv2DWithBiases_Fp32_GpuAcc_Test")