Import rbenv version 1.6.5
Merge branch 'chef-vendor-rbenv'
Import git version 2.7.0
Merge branch 'chef-vendor-git'
Import dmg version 2.0.8
Merge branch 'chef-vendor-dmg'
Import yum version 2.4.4
Merge branch 'chef-vendor-yum'
Import windows version 1.11.0
Merge branch 'chef-vendor-windows'
Reduce workers from 8 to 4.