Authors/changelog for swift 2.24.02.24.0

Change-Id: I60d4ad62c7d14ed15e114ed95102a2368c48f9f4

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+swift (2.24.0)
+
+    * Added a new object versioning mode, with APIs for querying and
+      accessing old versions. For more information, see the documentation
+      at https://docs.openstack.org/swift/latest/middleware.html#module-swift.common.middleware.versioned_writes.object_versioning
+
+    * Added support for S3 versioning using the above new mode.
+
+    * Added a new middleware to allow accounts and containers to opt-in to
+      RFC-compliant ETags. For more information, see the documentation at
+      https://docs.openstack.org/swift/latest/middleware.html#module-swift.common.middleware.etag_quoter
+      Clients should be aware of the fact that ETags may be quoted for RFC
+      compliance; this may become the default behavior in some future release.
+
+    * Proxy, account, container, and object servers now support "seamless
+      reloads" via `SIGUSR1`. This is similar to the existing graceful
+      restarts but keeps the server socket open the whole time, reducing
+      service downtime.
+
+    * New buckets created via the S3 API will now store multi-part upload
+      data in the same storage policy as other data rather than the
+      cluster's default storage policy.
+
+    * Device region and zone can now be changed via `swift-ring-builder`.
+      Note that this may cause a lot of data movement on the next rebalance
+      as the builder tries to reach full dispersion.
+
+    * Added support for Python 3.8.
+
+    * The container sharder can now handle containers with special
+      characters in their names.
+
+    * Internal client no longer logs object DELETEs as status 499.
+
+    * Objects with an `X-Delete-At` value in the far future no longer cause
+      backend server errors.
+
+    * The bulk extract middleware once again allows clients to specify metadata
+      (including expiration timestamps) for all objects in the archive.
+
+    * Container sync now synchronizes static symlinks in a way similar to
+      static large objects.
+
+    * `swift_source` is set for more sub-requests in the proxy-server. See
+      https://docs.openstack.org/swift/latest/logs.html#swift-source
+
+    * Errors encountered while validating static symlink targets no longer
+      cause BadResponseLength errors in the proxy-server.
+
+    * On Python 3, the KMS keymaster now works with secrets stored
+      in Barbican with a text/plain payload-content-type.
+
+    * On Python 3, the formpost middleware now works with unicode file names.
+
+    * Several utility scripts now work better on Python 3:
+
+      * swift-account-audit
+
+      * swift-dispersion-populate
+
+      * swift-drive-recon
+
+      * swift-recon
+
+    * On Python 3, certain S3 API headers are now lower case as they
+      would be coming from AWS.
+
+    * Per-service `auto_create_account_prefix` settings are now deprecated
+      and may be ignored in a future release; if you need to use this, please
+      set it in the `[swift-constraints]` section of /etc/swift/swift.conf.
+
+    * Various other minor bug fixes and improvements.
+
+
 swift (2.23.1, train stable backports)
 
     * On Python 3, the KMS keymaster now works with secrets stored