corrected the broken unit test for sup_spec.rb to match the new systemd template
corrected the broken unit test for sup_spec.rb to match the new systemd template

Signed-off-by: Jeff Brimager <3185ad413b0b02e55e886fe53762b40268e0337d@chef.io>

chef-cookbooks/habitat,chef-cookbooks/habitat,chef-cookbooks/habitat