Bump next version to 2012.2.1

Open stable/folsom by bumping next version to 2012.2.1.

Change-Id: I1d6d3a4dadc21427b5aa23a1f093850fd667f741
Restore SIGPIPE default action for subprocesses

Python ignores SIGPIPE on startup, because it prefers to check every
write and raise an IOError exception rather than taking the signal. Most
Unix subprocesses don't expect to work this way. This patch (adapted
from Colin Watson's post at http://tinyurl.com/2a7mzh5) sets SIGPIPE
back to the default action for quantum.agent.linux.utils.execute,
quantum.common.utils.execute and quantum-rootwrap created subprocesses.

Fixes bug 1053364

Change-Id: Ib805f1f8846c245b75a5ea64278c840b823c1fb2
Set defaultbranch in .gitreview to stable/folsom

This allows people run git-review without any arguments.

Change-Id: I2b2488ffffd783b64e5c760324e7d4a00d5a39db
Merge "Restore SIGPIPE default action for subprocesses" into stable/folsom
Treat invalid namespace call

Fixes bug 1060559

Change-Id: I29250100416b87f55781fb7e97339f6d3761513f
Ensures port is not created when database exception occurs

Fixes bug 1064261

The port creation code did not correctly treat a database error. That is,
if there was an exception the port would be created and an error returned
to the client.

Change-Id: I6cf36d1c641b46716afb16f228b8daa631099a5d
l3_nat_agent was renamed to l3_agent
and this was missed.

This broke quantum-l3-agent when setup.py was
used to install but  did not affect package installs.

This change fixes the issue.

Change-Id: I820d26fba5d2774262577ed4fbae81dc7362e93e
correct nvplib to update device_id

Fixes bug 1061391

Change-Id: Ide8efdfb12dd0f403d7e4f468b1c9f3cc024f9a9
Call iptables without absolute path.

Fixes bug 1069966

rootwrap expects the command name is not absolute. We need to call
the command without path to make rootwrap work well.

Change-Id: I6120103908d10ca257d177a320294de06a89c646
remove default value of local_ip in OVS agent

fixes bug 1051744

Remove the default value for local_ip in the OVS agent config.

Change-Id: Ie23ba8510c0cf5c17443c805e0befce6eccb253c
use object directly instead of the foreigh key to update master db object.

Bug #1064235

Change-Id: I74fe3e758681c40590de87c82fd093224d329f51
Fix flag name for l3 agent external network id

Bug #1056720

Change-Id: I744da7e1584d5230a23c4fc8b6fc258814babfa9
get_network in nvp plugin didn't return subnet information

Adds unit test for show network which checks for subnet.

Fixes bug 1061781

Change-Id: I459a1f11a9e4294c31d002c8dbcfde873e43c800
Merge "correct nvplib to update device_id" into stable/folsom
Merge "Ensures port is not created when database exception occurs" into stable/folsom
Merge "Call iptables without absolute path." into stable/folsom
Merge "remove default value of local_ip in OVS agent" into stable/folsom
Merge "l3_nat_agent was renamed to l3_agent and this was missed." into stable/folsom
Logging indicates when service starts and terminates

Fixes bug 1064070

The patch adds a log entry indication that the service has started. In
addition to this if there is an "exit" statement in the code, then the
log message will indicate that the service has been terminated.

Change-Id: Idb6cff4b85d26331df2c6e14aa0680e82b4e2cd7
Ensure that the SqlSoup import is still supported.

The sqlalchemy package 0.8.0b1 released on October 30, 2012
removed SQLSoup (http://docs.sqlalchemy.org/en/latest/changelog/migration_08.html#sqlsoup)

A number of quantum agents make use of this code to access the
database.

Change-Id: I6ed6424277d60598d9b2b66eb0b206f1a634991e