IVGCVSW-2073: Move remaining backend-specific tests from armnn to backends

Change-Id: I45fd5b6dd32c435b78a54dc377a623e60978ce13
diff --git a/src/backends/cl/backend.mk b/src/backends/cl/backend.mk
index 1f89f3b..996db3f 100644
--- a/src/backends/cl/backend.mk
+++ b/src/backends/cl/backend.mk
@@ -44,9 +44,12 @@
 
 BACKEND_TEST_SOURCES := \
         test/ClCreateWorkloadTests.cpp \
+        test/ClEndToEndTests.cpp \
+        test/ClJsonPrinterTests.cpp \
         test/ClLayerSupportTests.cpp \
         test/ClLayerTests.cpp \
         test/ClMemCopyTests.cpp \
+        test/ClOptimizedNetworkTests.cpp \
         test/ClRuntimeTests.cpp \
         test/Fp16SupportTest.cpp \
         test/OpenClTimerTest.cpp