Print ncores #21858

Job	Run time
pyflakes	4m 24s
cancel	2s
Check if image exists in registry	5s
licensing	5m 4s
linux (ubuntu-20.04, debug)	50m 37s
linux-fpga (ubuntu-20.04, debug)	49m 28s
linux (ubuntu-20.04, release)	7m 53s
misspell	18s
linux (ubuntu-20.04, codecov)	10m 23s
Build SLES image	0s
Build image	0s
sles	4m 55s
format	4m 40s
cppcheck	58m 51s
tidy	7m 6s
	3h 23m 46s

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