use --no-document for rubygems 3.0
use --no-document for rubygems 3.0

we force-upgrade so we have to use this now.

we also force-upgrade so we don't care about back-compat.

Signed-off-by: Lamont Granquist <0ab8dc438f73addc98d9ad5925ec8f2b97991703@scriptkiddie.org>

chef-cookbooks/chef_client_updater,chef-cookbooks/chef_client_updater