Traceback instead of error message when stack_name's format is wrong

[Peter Razumovsky]

1. $ heat stack-create 1test -f templates/stub.yaml
ERROR: Invalid stack name 1stub must contain only alphanumeric or "_-." characters, must start with alpha
Traceback (most recent call last):

  File "/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 137, in _dispatch_and_reply
    incoming.message))

  File "/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 180, in _dispatch
    return self._do_dispatch(endpoint, method, ctxt, args)

  File "/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 126, in _do_dispatch
    result = getattr(endpoint, method)(ctxt, **new_args)

  File "/usr/local/lib/python2.7/dist-packages/osprofiler/profiler.py", line 105, in wrapper
    return f(*args, **kwargs)

  File "/opt/stack/heat/heat/engine/service.py", line 72, in wrapped
    return func(self, ctx, *args, **kwargs)

  File "/opt/stack/heat/heat/engine/service.py", line 675, in create_stack
    nested_depth)

  File "/opt/stack/heat/heat/engine/service.py", line 592, in _parse_template_and_validate_stack
    **common_params)

  File "/opt/stack/heat/heat/engine/stack.py", line 95, in __init__
    ) % stack_name)

ValueError: Invalid stack name 1stub must contain only alphanumeric or "_-." characters, must start with alpha

This is wrong, I think response should looks like:
ERROR: Invalid stack name 1test must contain only alphanumeric or "_-." characters, must start with alpha

The same situation with resources. If resource names like "Res/ource", we get traceback instead of error message.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/137784

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/137784
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=9c877f3172fca65619b1b50bd327b30541cdc439
Submitter: Jenkins
Branch: master

commit 9c877f3172fca65619b1b50bd327b30541cdc439
Author: Peter Razumovsky <email address hidden>
Date: Fri Nov 28 16:18:51 2014 +0300

    Fix error msg invalid stack or res name

    If template contains resource with name like
    'res/name', we will get traceback instead of
    correct error message. The same situation with
    stack name: if it's incorrect, we will get
    traceback.

    Change-Id: I4a0e51ff649aaaad5f18f52383dab186dab54230
    Closes-bug: #1397313

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/juno
Review: https://review.openstack.org/142093

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/142093
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=bbf71825604b6d165e1d97fc875ed01f5d6a1cc8
Submitter: Jenkins
Branch: stable/juno

commit bbf71825604b6d165e1d97fc875ed01f5d6a1cc8
Author: Peter Razumovsky <email address hidden>
Date: Fri Nov 28 16:18:51 2014 +0300

    Fix error msg invalid stack or res name

    If template contains resource with name like
    'res/name', we will get traceback instead of
    correct error message. The same situation with
    stack name: if it's incorrect, we will get
    traceback.

    Change-Id: I4a0e51ff649aaaad5f18f52383dab186dab54230
    Closes-bug: #1397313
    (cherry picked from commit 9c877f3172fca65619b1b50bd327b30541cdc439)