Add skiabot-ct-dm-001 to slave_hosts_cfg.py
Add skiabot-ct-dm-001 to slave_hosts_cfg.py

BUG=skia:4624

Review URL: https://codereview.chromium.org/1501743002

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot