security/caldera: Improve port

• Improve rc script. Now it kills some child processes
• Use my new atomic-red-team repository. It include a new entry run_as into yaml files for identify FreeBSD tests easily because oficial redcanaryco/atomic-red-team project included new changes and these remove freebsd entries from yaml files because it was merged into linux tests. Now identify what are FreeBSD tests is almost imposible.
• Some other minor modifications
• Bump PORTREVISION