SWDEV-353807 - Fixes multiple catch issues (#2912)

- enforcing c++17 for all tests
- Warning as error: ignoring return value

Change-Id: I3d171540403f74222e631d1a8e393386461c9729

catch/unit/streamperthread/hipStreamPerThread_MultiThread.cc

@@ -26,14 +26,14 @@ static void Copy_to_device() {
   int* A_h = nullptr;
   int* A_d = nullptr;
 
-  hipHostMalloc(&A_h, ele_size*sizeof(int));
-  hipMalloc(&A_d, ele_size * sizeof(int));
+  HIP_CHECK(hipHostMalloc(&A_h, ele_size*sizeof(int)));
+  HIP_CHECK(hipMalloc(&A_d, ele_size * sizeof(int)));
 
   for (unsigned int i = 0; i < ele_size; ++i) {
     A_h[i] = 123;
   }
-  hipMemcpyAsync(A_d, A_h, ele_size * sizeof(int), hipMemcpyHostToDevice,
-                 hipStreamPerThread);
+  HIP_CHECK(hipMemcpyAsync(A_d, A_h, ele_size * sizeof(int), hipMemcpyHostToDevice,
+                 hipStreamPerThread));
 }
 
 /*