Add multi work-group support for collective functional tests (#45)

- Added multi-work group support for the All-to-all, Fcollect, Broadcast, Barrier and Sync collective functional tests
- Renamed All-to-all and Fcollect tests to TeamAlltoAll and TeamFcollect

[ROCm/rocshmem commit: 57d60aa727]

projects/rocshmem/tests/functional_tests/barrier_all_tester.cpp

@@ -44,7 +44,13 @@ __global__ void BarrierAllTest(int loop, int skip, long long int *start_time,
 
     __syncthreads();
 
-    rocshmem_ctx_wg_barrier_all(ctx);
+    /**
+     * The function `rocshmem_ctx_wg_barrier_all` should be called from only
+     * one group within the grid to avoid unintended behavior.
+     */
+    if (is_block_zero_in_grid()) {
+      rocshmem_ctx_wg_barrier_all(ctx);
+    }
   }
   __syncthreads();
 
@@ -70,7 +76,7 @@ void BarrierAllTester::launchKernel(dim3 gridSize, dim3 blockSize, int loop,
   hipLaunchKernelGGL(BarrierAllTest, gridSize, blockSize, shared_bytes, stream,
                      loop, args.skip, start_time, end_time);
 
-  num_msgs = (loop + args.skip) * gridSize.x;
+  num_msgs = loop + args.skip;
   num_timed_msgs = loop;
 }