Set auth_uri for swift proxy server

Not only does the service complain that this should be set, but under
certain scenarios and keystone middleware versions, this is flat out
broken.

Conflicts:
	roles/swift-proxy/templates/etc/swift/proxy-server.conf
Remove swift logging changes

Do not UDP log to localhost and remove swift rsyslog config.  This will
be augmented by logstash forwarding work.
Merge pull request #657 from blueboxgroup/backport-swift-logging-fixes

Backport swift logging fixes