fix(database): update wal-e
Merge pull request #2644 from aledbf/update_wal-e

fix(database): update wal-e
docs(baremetal): fix typo
docs(deisctl): add examples and sshPrivateKey=path to config usage
Merge pull request #2648 from mboersma/docs-sshpkey-is-path

docs(deisctl): add examples and sshPrivateKey=path to config usage
feat(*): provision using CoreOS stable channel