Ensure we don't access the net when building docs

(Note, this has not been sent upstream)
Use updated parallel install versions of epel package

Use sqlalchemy >= 0.6.3 WebOb >= 1.0 Routes >= 1.12.3 PasteDeploy >= 1.5.0
and depend on the parallel installable
versions of these packages to satisfy those requirements.

Delve into pkg_resources a little to get it to modify sys.path,
so that our parallel installed egg takes precedence over the
system default module versions.
(cherry picked from commit 7b25747ffc21d0771e864f57ab2088725c8851f0)

Conflicts:
	bin/cinder-manage
remove deprecated assert_unicode sqlalchemy attribute

Removing this enables use with sqlalchemy 0.8.0
The deprecation is described upstream at:
http://docs.sqlalchemy.org/en/latest/changelog/changelog_08.html#change-ad44af79c886d1bb283042deb64f9cbe

Change-Id: I305bfdbcd3c3669c41318ea34115624f729b3909