--removal-allowed simplified to a simple boolean switch
--removal-allowed simplified to a simple boolean switch

Profile Manager uses 'Never', 'Always' or 'With Authorization',
corresponding to the PayloadRemovalDisallowed key at the profile level.
We now assume it's 'Never' by removal_allowed being False, otherwise
it's 'Always' by removal_allowed being True.

scriptingosx/mcxToProfile,timsutton/mcxToProfile