refactor(@angular/cli): centralize Node.js version checks into a new … #2769

Job	Run time
lint	2m 0s
build	18s
build-e2e-windows	24s
Browser Compatibility Tests	0s
publish-snapshots	0s
e2e-package-managers	0s
e2e	0s
e2e-snapshots	-1s
e2e-windows	-1s
test	-8s
	2m 32s

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