refactor code to be based on existing verify scripts - removed functionality for auto import of KEYS - we can do better by downloading from the https://people.apache.org/keys/group/. we should also tie this into stage_apache_rc - if we map this in there, we can do the whole thing end to end.
Merge pull request #2 from chrismattmann/verify-rc-refactor

Refactor verify_rc.sh