Temporarily pin Swift to the last known-good commit
Temporarily pin Swift to the last known-good commit

Swift is currently failing to build due to a required dependency
bump [1]. This bump requires a bootstrap of the Stein dependencies,
which is currently waiting for [2].

To avoid staying non-consistent for a long time, let's pin Swift
to the last known-good commit until it is fixed.

[1] - https://review.rdoproject.org/r/16231
[2] - https://bugs.centos.org/view.php?id=15274

Change-Id: I68b2cc10417e049d83f04852841e1f657087e3a9

javierpena/rdoinfo,redhat-openstack/rdoinfo