chown -R to ensure that stack user owns data_dir

The fix for bug #1129748 tightens some permissions on image
directories.  This breaks the devstack gate jobs, which were
relying on wide-open permissions.  chowning recursively should
ensure that all the directories are owned by the stack user,
so the gate tests work with tighter permissions.

Change-Id: I09be54bff6d8f9c3f7f599d6e5ada6431beb7c31
Quantum PLUMgrid Plugin Support

The commit introduces devstack support for the Quantum PLUMgrid Plugin.

Change-Id: Idc4d97a65f9e7669075609aafe7ffc8286f0b94a
Implements: blueprint plumgrid-plugin
Revert "Enable swift by default."

This reverts commit 5a5cbf7274a6a50bb766ec590cf885430ed5c5d0.

This breaks on a default openstack install on Ubuntu 12.10,
revert for now until this can be cleaned up to work out of the
box.

Change-Id: I185509cc30bd28e920cdab60fc92129949bd6b0d
Merge "Quantum PLUMgrid Plugin Support"
Merge "chown -R to ensure that stack user owns data_dir"