IVGCVSW-2559 End to end tests for Detection PostProcess

* end to end tests for Detection PostProcess float and uint8
* add anchors to AddDetectionPostProcessLayer
* add anchors to VisitDetectionPostProcessLayer
* refactor code

Change-Id: I3c5a9a4a60b74c2246b4a27692bbf3c235163f90
Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
diff --git a/src/backends/backendsCommon/test/EndToEndTestImpl.hpp b/src/backends/backendsCommon/test/EndToEndTestImpl.hpp
index d17b61e..a04fdf7 100644
--- a/src/backends/backendsCommon/test/EndToEndTestImpl.hpp
+++ b/src/backends/backendsCommon/test/EndToEndTestImpl.hpp
@@ -163,7 +163,10 @@
         }
         else
         {
-            BOOST_TEST(it.second == out);
+            for (unsigned int i = 0; i < out.size(); ++i)
+            {
+                BOOST_TEST(it.second[i] == out[i], boost::test_tools::tolerance(0.000001f));
+            }
         }
     }
 }