ceilometer.conf.sample should be ignored

[ZhiQiang Fan]

Patch: https://review.openstack.org/#/c/88560/ , (Change-Id: I0bbec0e86f63e6fcd691d626473ed8498024f7ab) has removed the ceilometer.conf.sample, but not add it to .gitignore file, which cause it is tracked after run tox -e genconfig

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/93878

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/93893

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/93893
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=b77fd1690fc2dfd36e1f23423b9811aae16a1654
Submitter: Jenkins
Branch: master

commit b77fd1690fc2dfd36e1f23423b9811aae16a1654
Author: ZhiQiang Fan <email address hidden>
Date: Fri May 16 19:06:50 2014 +0800

    Ignore etc/nova/nova.conf.sample

    Since we have already remove this sample file, and provided a way
    to generate it, it should be no longer tracked.

    Change-Id: I786812d039d96044ff5040d09f5472051966f74f
    Closes-Bug: #1320150

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/93878
Committed: https://git.openstack.org/cgit/openstack/ceilometer/commit/?id=72e9faaea6c5c5d7b5f2b426c9e50ca2a98b6c37
Submitter: Jenkins
Branch: master

commit 72e9faaea6c5c5d7b5f2b426c9e50ca2a98b6c37
Author: ZhiQiang Fan <email address hidden>
Date: Fri May 16 17:09:07 2014 +0800

    Ignore the generated file ceilometer.conf.sample

    Since we have removed the ceilometer.conf.sample file and added
    tox -e genconfig to generate it, we should no longer track it.

    Change-Id: I66a03eb2672941ba5115bf0adb9fb0c944f68e4d
    Closes-Bug: #1320150