sqlite files should be excluded from the scope of the repo

[Victor Morales]

By default, the sql engine used by all the openstack components is sqlite. Its simplicity helps during development/coding phases to avoid additional dependencies like MySQL or others. In order to store the data this engine uses text files, but currently it's not part of the excluded files of the repo within .gitignore file. Adding this file could avoid the submission of keystone.db file and others by mistake.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/109165

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/109165
Committed: https://git.openstack.org/cgit/openstack/keystone/commit/?id=ca25a23af0aa688b7f1e48eb1718651cc07a6b5b
Submitter: Jenkins
Branch: master

commit ca25a23af0aa688b7f1e48eb1718651cc07a6b5b
Author: Victor Morales <email address hidden>
Date: Wed Jul 23 20:08:54 2014 -0500

    Sqlite files excluded from the repo

    In order to avoid submission of sql database files by mistake, it was
    added the pattern of those files into the .gitignore file.

    Change-Id: Iaec6b15c8d879c42883de138fa70a2004ca9b2b5
    Closes-Bug: #1347976