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.
Merge pull request #653 from craigtracey/swift-auth-uri

Set auth_uri for swift proxy server
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 #654 from craigtracey/swift-logging-cleanup

Remove swift logging changes