node scripts Bug 920477 - replace -? short option with documented -h

https://bugzilla.redhat.com/show_bug.cgi?id=920477

Both scripts show "-h" as the short option for "--help" in their usage
output - updated code to match docs.
Merge pull request #1973 from dobbymoodge/BZ920477

node scripts Bug 920477 - replace -? short option with documented -h