remove runtime dep on python-pbr
Revert "Use oslo.sphinx and remove local copy of doc theme"

This reverts commit ad58c0f899751ca08174965ab007c5fc6b2e1e5c.
sync parameter values with keystone-dist.conf
Use updated parallel install versions of epel package

Use SQLAlchemy >= 0.7.8 WebOb >= 1.2 Routes >= 1.12.3 PasteDeploy >= 1.5.0
and depend on the parallel installable
versions of these packages to satisfy those requirements.