Low: Tools: ocf-tester: redirect error messages to stderr
Low: Tools: ocf-tester: redirect error messages to stderr

The --help option isn't handled in the command line parsing and
therefore doesn't have the same option handling as the -h option.
As a result do not mention the --help option in the usage information.

Thanks: Lars Ellenberg <31df9cacdc65c624cc60c2dcd22bbf92dc230e16@linbit.com> for review and suggestion for improvement

asp24/resource-agents,asp24/resource-agents,stevenraspudic/resource-agents,asp24/resource-agents,stevenraspudic/resource-agents,stevenraspudic/resource-agents