Sync rpc from oslo-incubator.

Changes include:

 * Fix Copyright Headers - Rename LLC to Foundation
 * Preserve exceptions in impl_zmq.
 * Don't log a traceback on rpc call timeout.
 * Redis-based matchmaker
 * AMQP: skip duplicate messages
 * some other minor fixes / cleanups

Fix bug 1154232.

Change-Id: I8afb6b9a919fca34b4a93f7fad1551a023eba6b2
Lazy load CONF.quota_driver.

nova.quota is imported before config options are parsed and it looks at
CONF.quota_driver on module-load.  This changes it so we look at
CONF.quota_driver post-module-load.

Fixes bug 1154371

Change-Id: Ia2e63a7aeab2234be683ff507e7856d46601a9a8
Skip deleted fixed ip address for os-fixed-ips extension

Return the correct fixed ip address info when the address record(s)
marked 'deleted' in db.

Fixes bug 1152958

Change-Id: I58ba47427753a81cd43eb618cff199c45f83322c
Signed-off-by: Zhi Yan Liu <zhiyanl@cn.ibm.com>
Fix reconnecting to libvirt.

The right logic was in place for dealing with losing a connection to
libvirt and reconnecting.  However, it was observed that we actually get
VIR_ERR_INTERNAL_ERROR, VIR_FROM_RPC after restarting libvirtd.  The
code is just updated to deal with INTERNAL_ERROR.

Fix bug 1154473.

Change-Id: Idf4abf3fe485cf534f1732e4340fc35652fec003
Merge "Sync rpc from oslo-incubator."
Merge "Fix reconnecting to libvirt."
Merge "Lazy load CONF.quota_driver."
Merge "Skip deleted fixed ip address for os-fixed-ips extension"
Adds the Scheduled Images extension.

Includes the Scheduled Images extension extension.