Squashed 'salt-contrib/' content from commit 7269ba5

git-subtree-dir: salt-contrib
git-subtree-split: 7269ba548e0ed10f3a51b285239c9062dd5f49dd
Merge commit '52c0515a456545cc67a90137fa3a912e5150da39' as 'salt-contrib'
add salt-contrib shared folder