update OpenStack, LLC to OpenStack Foundation

fixes bug 1154745

The previous update (https://review.openstack.org/#/c/24103/) missed
header files that contained "OpenStack, LLC".  This change corrects the
missed files to reflect the OpenStack Foundation.

Change-Id: I9c6de265267485ef2c82ea7e6d8643e82134d102
(cherry picked from commit 65e3d8c9773880094c0a4c164e046fae9cb7a5d9)
Locking edge case when lock_path does not exist

Fixes bug 1158179

In the case that the lock_path does not exist and there is a contested
resource then the process that was waiting on the lock will not
be locking due to the fact that the directory was deleted.

Change-Id: I75d720d4df499e85386d3e2cc86b927b017e12ac
Include Co-authored-by entries in AUTHORS.

Co-authored-by lines are the way we've decided to indicated shared
authorship of a patch, so content from them should be included in
the generated AUTHORS file.

Fixes bug 1158319.

Change-Id: I9dacf78c01f3ad74e696f16a7aa39edb98e8d185
Merge remote-tracking branch 'upstream/stable/grizzly' into grizzly