Error on creating pods on multiple k8s bay

[hongbin]

Here is the steps to reproduce.

$ magnum bay-create --name bay1 --baymodel k8sbaymodel --node-count 1
...

$ magnum bay-create --name bay2 --baymodel k8sbaymodel --node-count 1
...

$magnum pod-create --manifest ./redis-master.yaml --bay bay1
...

$magnum pod-create --manifest ./redis-master.yaml --bay bay2
ERROR: pods "redis-master" already exists
Traceback (most recent call last):

  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 142, in _dispatch_and_reply
    executor_callback))

  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 186, in _dispatch
    executor_callback)

  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 130, in _do_dispatch
    result = func(ctxt, **new_args)

  File "/opt/stack/magnum/magnum/conductor/handlers/k8s_conductor.py", line 178, in pod_create
    raise exception.KubernetesAPIFailed(code=err.code, message=message)

KubernetesAPIFailed: pods "redis-master" already exists
 (HTTP 409)