Enable unified mode if supported
Enable unified mode if supported

Co-authored-by: Tim Smith <ae0eea2636c1cc67be760c81eb57aaf83bf62ce1@gmail.com>
Signed-off-by: Robert Detjens <80088559520001a14c62b25ed86ca3d2c36785e9@osuosl.org>

chef-cookbooks/chef_client_updater,chef-cookbooks/chef_client_updater