Squashed 'external/devlib/' changes from 79783fa0..6249c06b

6249c06b modules/sched: Add awareness of new debug directory root
3af3463c utils/ssh: Fix paramiko streams
7065847f utils/ssh: Fix paramiko stdin

git-subtree-dir: external/devlib
git-subtree-split: 6249c06b446d77962bcdb8132f1b306f4ec2d637