Support bfloat16 on rest of the unit tests

test/test_Broadcast.cpp

@@ -59,7 +59,8 @@ namespace CorrectnessTests
                                                 ncclUint64,
                                                 //ncclFloat16,
                                                 ncclFloat32,
-                                                ncclFloat64),
+                                                ncclFloat64,
+                                                ncclBfloat16),
                                 // Number of elements
                                 testing::Values(1024, 1048576),
                                 // Number of devices