Final set of changes to remove the diffs carried to make UFO work with
OpenStack Swift. The code is now a complete layering on top of OpenStack Swift
where we either "monkey patch" or subclass as necessary.

See BZ 870589 (https://bugzilla.redhat.com/show_bug.cgi?id=870589).

There are a lot of changes here due for the most part to rearranging the
directory hierarchy to have create a proper python module hierarchy under the
"gluster" namespace. Plugin references have been removed. The differences that
used to be in the swift.diff file are now replaced with server implementations
for account, container, object, and proxy that subclass the swift versions.

Additionally, the plugins/conf directory has been moved to the "etc"
directory, and the plugins/bin directory promoted a level.

Unit tests pass.

A new setup.py file is provided so that the install process can use it for
creating all the necessary python install infrastructure (eggs and paste
support).

A new RPM spec file is provided which to properly install the new code, and
the sample configuration files have been modified to reference the new python
egg.

Change-Id: I4316c1b66dca80f847fe9b0d583174689c175599
BUG: 870589
Signed-off-by: Peter Portante <peter.portante@redhat.com>
Reviewed-on: http://review.gluster.org/4180
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Mohammed Junaid <junaid@redhat.com>
Tested-by: Kaleb KEITHLEY <kkeithle@redhat.com>

Refactor code to use the devices configuration file setting for account,
container, and object servers, dropping mount_path from the fs.conf file, and
constructing new account, container and object server rings.

This removes the next to last set of diffs in the swift diff file. See BZ
870589 (https://bugzilla.redhat.com/show_bug.cgi?id=870589).

The key to the change is the dropping of the pre-built account, container and
object rings, instead providing a script that will generate them for the user
given the gluster volume name in use. In addition, we override the Swift
check_mount() method and replace it with Gluster's which attempts to
"auto-mount" if it is not already mounted.

The following is an enumeration of the changes contained in this refactoring:

    * The refactoring to override the Swift check_mount() involved condensing
      a lot of code, removing redundancies and simplifying methods across a
      number of modules

    * Drop checking the mount point in the low level DiskDir, DiskAccount and
      DiskFile objects now that Swift's normal mount checking is used, and
      enable it by default in the template configuration file

    * Add missing get_container_timestamp() method for DiskAccount objects

    * Fix the plugin RPM spec file to provide the new ring builders, and while
      we were at it, finally fix the over-writing of the configuration files
      on install

    * Bug fixes

        * The monkey patched version of check_object_creation was not working
          correctly due to a missing import of HTTPBadRequest and a bad
          reference to validate_obj_name_component()

        * Only have the utils module import the plugins constraints module for
          the side effect of monkey patching if gluster is enabled

        * Removed the db_file.db file in the tree since it is created on the
          fly

        * Updated 2011 copyright notices to 2012

Change-Id: I8f4454576b1423021c9bbf3c36176f8db51e62c0
BUG: 870589
Signed-off-by: Peter Portante <peter.portante@redhat.com>
Reviewed-on: http://review.gluster.org/4179
Reviewed-by: Pete Zaitcev <zaitcev@redhat.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Tested-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-by: Mohammed Junaid <junaid@redhat.com>