swift pollster doesn't import service_credentials

[Hisashi Osanai]

[Description]
swift pollster doesn't import service_credentials.
cfg.CONF.service_credentials is used L72 in swift.py but there is no import_group
method calling here.

     67 def _get_endpoint(ksclient):
     68 # we store the endpoint as a base class attribute, so keystone is
     69 # only ever called once
     70 if _Base._ENDPOINT is None:
     71 try:
     72 conf = cfg.CONF.service_credentials
     73 _Base._ENDPOINT = ksclient.service_catalog.url_for(
     74 service_type=cfg.CONF.service_types.swift,
     75 endpoint_type=conf.os_endpoint_type)
     76 except exceptions.EndpointNotFound:
     77 LOG.debug(_("Swift endpoint not found"))
     78 return _Base._ENDPOINT

[Version details]
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[Crystal clear details to reproduce the bug]
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[Test environment details]
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[Actual results]
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[Expected results]
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I would like to have this bug if possible.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/124318

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/124318
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=157044dfcced0f971216ff371f1a3b4b12adae47
Submitter: Jenkins
Branch: master

commit 157044dfcced0f971216ff371f1a3b4b12adae47
Author: Hisashi Osanai <email address hidden>
Date: Tue Sep 30 15:39:18 2014 +0900

    Add cfg.CONF.import_group for service_credentials

    The cfg.CONF.service_credentials attribute is used without calling
    cfg.CONF.import_group. Add calling the method in this patch.

    Change-Id: I700c5ea7ae5ff3f61c28a767e5aa60db0dfb46ce
    Closes-Bug: 1373753

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/juno
Review: https://review.openstack.org/138321

[OpenStack Infra (hudson-openstack)]

Change abandoned by Eoghan Glynn (<email address hidden>) on branch: stable/juno
Review: https://review.openstack.org/138321
Reason: The import_group is really just belt'n'braces ... i.e. check that the group is registered ... not a user visible error really, so perhaps does not belong on stable.