Add alternatives module to spec_helper_acceptance.rb

spec/spec_helper_acceptance.rb

@@ -16,6 +16,7 @@ RSpec.configure do |c|
     hosts.each do |host|
       on host, puppet('module','install','camptocamp-augeas'), { :acceptable_exit_codes => [0,1] }
       on host, puppet('module','install','puppetlabs-stdlib'), { :acceptable_exit_codes => [0,1] }
+      on host, puppet('module','install','puppet-alternatives'), { :acceptable_exit_codes => [0,1] }
     end
   end
 end