Merge "Make a demo for Magnum"

demos/heat/steak-rg.yaml

demos/magnum/redis

demos/magnum/redis-kube/README.md

demos/magnum/redis-kube/redis-controller.yaml

demos/magnum/redis-kube/redis-master.yaml

demos/magnum/redis-kube/redis-proxy.yaml

demos/magnum/redis-kube/redis-sentinel-controller.yaml

demos/magnum/redis-kube/redis-sentinel-service.yaml

demos/magnum/start

demos/magnum/stop

tools/init-runonce