Updated openstack/openstack
Project: openstack/glance  10a6be70477ec67d3c453a939e82af0fdf786beb
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Pin SQLAlchemy to 0.7.x

0.7.10 has been released and is compatible with 0.7.x. Instead
of pinning to 0.7.9, simply pin to 0.7.x to avoid SQLAlchemy 0.8

Change-Id: Iea57598698b4faf906e82a2974497221d07f4d16