Updated openstack/openstack
Project: openstack/requirements  1347763f2ff834edda3ef408c429d78fd5cbe74a

Make sure pymongo version >= 2.5

Now Marconi is exposing pymongo's cert options to user for the
maxium security, which was added since version 2.5

Change-Id: I504112d1f39e5a1b74bcae56b4b855c25b47acd8
Closes-Bug: #1328720