Bf16 gpu support #21664

Job	Run time
Check if image exists in registry	5s
licensing	5m 9s
linux (ubuntu-20.04, debug)	47m 6s
cancel	7s
linux (ubuntu-20.04, release)	7m 51s
pyflakes	3m 41s
linux (ubuntu-20.04, codecov)	11m 24s
linux-fpga (ubuntu-20.04, debug)	44m 47s
Build SLES image	0s
Build image	0s
sles	5m 21s
format	4m 51s
tidy	53m 58s
cppcheck	50m 35s
	3h 54m 55s

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