make collections whitelist follow normal flow
* fixes missing set_options call and adhoc and stdout processing rules
* avoid dupes
* fixed to handle redirects
* also updated tests with new and more accurate skip message
* fix callback tests for envs with cowsay installed
* lots MOAR comments on why the code is as it is, some todos to refactor in future
Co-authored-by: Matt Davis <nitzmahone@users.noreply.github.com>
