POSTs logged as PUTs by the proxy server

Reviewed: https://review.openstack.org/11636
Committed: http://github.com/openstack/swift/commit/4a2ae2b46034e8027bee20dcfaaf38a9ee0c5c17
Submitter: Jenkins
Branch: master

commit 4a2ae2b46034e8027bee20dcfaaf38a9ee0c5c17
Author: Darrell Bishop <email address hidden>
Date: Sun Aug 19 17:44:43 2012 -0700

    Upating proxy-server StatsD logging.

    Removed many StatsD logging calls in proxy-server and added
    swift-informant-style catch-all logging in the proxy-logger middleware.
    Many errors previously rolled into the "proxy-server.<type>.errors"
    counter will now appear broken down by response code and with timing
    data at: "proxy-server.<type>.<verb>.<status>.timing". Also, bytes
    transferred (sum of in + out) will be at:
    "proxy-server.<type>.<verb>.<status>.xfer". The proxy-logging
    middleware can get its StatsD config from standard vars in [DEFAULT] or
    from access_log_statsd_* config vars in its config section.

    Similarly to Swift Informant, request methods ("verbs") are filtered
    using the new proxy-logging config var, "log_statsd_valid_http_methods"
    which defaults to GET, HEAD, POST, PUT, DELETE, and COPY. Requests with
    methods not in this list use "BAD_METHOD" for <verb> in the metric name.
    To avoid user error, access_log_statsd_valid_http_methods is also
    accepted.

    Previously, proxy-server metrics used "Account", "Container", and
    "Object" for the <type>, but these are now all lowercase.

    Updated the admin guide's StatsD docs to reflect the above changes and
    also include the "proxy-server.<type>.handoff_count" and
    "proxy-server.<type>.handoff_all_count" metrics.

    The proxy server now saves off the original req.method and proxy_logging
    will use this if it can (both for request logging and as the "<verb>" in
    the statsd timing metric). This fixes bug 1025433.

    Removed some stale access_log_* related code in proxy/server.py. Also
    removed the BaseApplication/Application distinction as it's no longer
    necessary.

    Fixed up the sample config files a bit (logging lines, mostly).

    Fixed typo in SAIO development guide.

    Got proxy_logging.py test coverage to 100%.

    Fixed proxy_logging.py for PEP8 v1.3.2.

    Enhanced test.unit.FakeLogger to track more calls to enable testing
    StatsD metric calls.

    Change-Id: I45d94cb76450be96d66fcfab56359bdfdc3a2576