The command in the quickstart guide was outdated. It should be:

magnum baymodel-create --name k8sbaymodel \
                       --image-id fedora-21-atomic-5 \
                       --keypair-id testkey \
                       --external-network-id public \
                       --dns-nameserver 8.8.8.8 \
                       --flavor-id m1.small \
                       --docker-volume-size 5 \
                       --network-driver flannel \
                       --coe kubernetes

You need to specify network-driver as flannel to create a kubernetes baymodel. The reason is that kubernetes requires Flannel to connect the pods.