Exhaustive tune reduce operators #22202

Job	Run time
cancel	3s
Check if image exists in registry	5s
licensing	3m 23s
pyflakes	4m 28s
linux (ubuntu-20.04, debug)	41m 51s
linux (ubuntu-20.04, release)	7m 38s
linux-fpga (ubuntu-20.04, debug)	43m 2s
linux (ubuntu-20.04, codecov)	11m 4s
misspell	21s
Build SLES image	0s
Build image	0s
format	5m 29s
tidy	5m 24s
cppcheck	59m 57s
sles	2m 13s
	3h 4m 58s

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