[AppSetup] Improve ability to disable all packager options.
[AppSetup] Improve ability to disable all packager options.

artsy/eigen,artsy/emission,artsy/eigen,artsy/emission,artsy/eigen,artsy/emission,artsy/eigen,artsy/eigen,artsy/eigen,artsy/emission,artsy/emission,artsy/eigen,artsy/emission,artsy/emission