L3 Agent restart causes network outage

When a L3 agent controlling multiple qrouter namespaces
restarts, it destroys all qrouter namespaces even if
some of them are still in use.  As a result, network
traffic could be stopped on the VMs that use the
networks associated with these namespaces.

So what is needed is for the L3 agent to preserve those
qrouter namespaces a L3 agent instance recognizes and to
destroy those it does not know about.

Closes-Bug: #1175695

Change-Id: Idae77886bd195d773878c3d212ccfd56269216fb
Extending quota support for neutron LBaaS entities

Note: This change is a continuation of abandoned
      change https://review.openstack.org/#/c/58720/
      Previous change was abandoned due to rebase problem.

Extending quota mechanism to support neutron
LBaaS entities. Adding quota for vips, pools, members
and health monitors.

This is one of four changes related to the BP.
This one is for neutron project.
Another one is for python-neutronclient package,
another one for tempest,
and another one for horizon/openstack-dashboard project

See blueprint neutron-quota-extension for another two changes.

Change-Id: I64a1d3647a4eb21833266346377416638667a931
Implements: blueprint neutron-quota-extension
Reassign IP to vlan interface when deleting a VLAN bridge

When deleting a VLAN bridge that has an IP address assigned to it, don't delete
the VLAN interface, but reassigned the IP address back to the underlying VLAN
interface.

Closes-Bug: #1255153

Change-Id: I5e39877c0786b43eddba9b5e1394d4c2ec023c0a
Removes an incorrect and unnecessary return

The current return statement creates a new object that is
not used anywhere and does not provide a functionality

Change-Id: Id53f6fbc8cc6fb38419e5616a352279f1a9b917f
Closes-Bug: #1276367
Don't document non-existing flag '--hide-elapsed'

Closes-Bug: 1277051
Change-Id: I4435645025dabcecf3dc1b7168ce17f10d6df534
Refactor to remove _recycle_ip

Since _recycle_ip is now just a pass-through to _delete_ip_allocation
it can be removed.

Change-Id: Ifba3da902de599f748038a33ef3bd98ff77c22b9
Closes-Bug: #1269501
Remove unnecessary call to get_dhcp_port from DeviceManager

Change-Id: I35459c352e712ea009589f3050205a4c307b909a
Closes-Bug: #1263217
Add extraroute_db support for Cisco N1kv Plugin

Adding extraroute_db support for router
scheduling functionality in Cisco N1kv Plugin.

Change-Id: I2b9082fc820114a9b10148be08021e5d4b5e5043
Closes-Bug: #1287437
LBaaS: move agent based driver files into a separate dir

Replace agent based driver files from haproxy driver dir
Same for unit tests files

Finalizes blueprint lbaas-common-agent-driver

Change-Id: Ibff85a9c2e1f1c59d72616836d56a697dce72c59
Remove legacy quantum config path

partially implements bp quantum-clean-up
Change-Id: Ifd876320a82991fb532988b9cdcecefde36ff378
Validate multicast ip range in Cisco N1kv Plugin

Do the validation of multicast ip range in Cisco N1kv Plugin and send
appropriate parameters to VSM.

Change-Id: Iaa1288d8a6deb2a2f32b263d4556dde8938d75f5
Closes-Bug: #1282754
Sync latest oslo.db code into neutron

Changes that were ported from oslo:

b4f72b2 Don't raise MySQL 2013 'Lost connection' errors
271adfb Format sql in db.sqlalchemy.session docstring
0334cb3 Handle exception messages with six.text_type
eff69ce Drop dependency on log from oslo db code
7a11a04 Automatic retry db.api query if db connection lost
11f2add Clean up docstring in db.sqlalchemy.session
1b5147f Only enable MySQL TRADITIONAL mode if we're running against MySQL
39e1c5c Move db tests base.py to common code
986dafd Fix parsing of UC errors in sqlite 3.7.16+/3.8.2+
9a203e6 Use dialect rather than a particular DB API driver
1779029 Move helper DB functions to db.sqlalchemy.utils
bcf6d5e Small edits on help strings
ae01e9a Transition from migrate to alembic
70ebb19 Fix mocking of utcnow() for model datetime cols
7aa94df Add a db check for CHARSET=utf8
aff0171 Remove "vim: tabstop=4 shiftwidth=4 softtabstop=4" from headers
fa0f36f Fix database connection string is secret
8575d87 Removed copyright from empty files
d08d27f Fix the obsolete exception message
8b2b0b7 Use hacking import_exceptions for gettextutils._
9bc593e Add docstring for exception handlers of session
855644a Removal of _REPOSITORY global variable.
ea6caf9 Remove string.lowercase usage
a33989e Remove eventlet tpool from common db.api
e40903b Database hook enabling traditional mode at MySQL
f2115a0 Replace xrange in for loop with range
c802fa6 SQLAlchemy error patterns improved
1c1f199 Remove unused import
6d0a6c3 Correct invalid docstrings
135dd00 Remove start index 0 in range()
28f8fd5 Make _extra_keys a property of ModelBase
45658e2 Fix violations of H302:import only modules
bb4d7a2 Enables db2 server disconnects to be handled pessimistically
915f8ab db.sqlalchemy.session add [sql].idle_timeout
e6494c2 Use six.iteritems to make dict work on Python2/3
48cfb7b Drop dependency on processutils from oslo db code
4c47d3e Fix locking in migration tests
c2ee282 Incorporating MIT licensed code
c5a1088 Typos fix in db and periodic_task module
fb0e86a Use six.moves.configparser instead of ConfigParser
1dd4971 fix typo in db session docstring
8a01dd8 The ability to run tests at various backend
0fe4e28 Use log.warning() instead of log.warn() in oslo.db
12bcdb7 Remove vim header
4c22556 Use py3kcompat urlutils functions instead of urlparse
ca7a2ab Don't use deprecated module commands
6603e8f Remove sqlalchemy-migrate 0.7.3 patching
274c7e2 Drop dependency on lockutils from oslo db code
97d8cf4 Remove lazy loading of database backend
2251cb5 Do not name variables as builtins
3acd57c Add db2 communication error code when check the db connection
c2dcf6e Add [sql].connection as deprecated opt for db
001729d Modify SQLA session due to dispose of eventlet
c2dcf6e Add [sql].connection as deprecated opt for db
001729d Modify SQLA session due to dispose of eventlet
4de827a Clean up db.sqla.Models.extra_keys interface
347f29e Use functools.wrap() instead of custom implementation
771d843 Move base migration test classes to common code
9721129 exception: remove
56ff3b3 Use single meta when change column type
3f2f70e Helper function to sanitize db url credentials
df3f2ba BaseException.message is deprecated since Python 2.6
c76be5b Add function drop_unique_constraint()
d4d8126 Change sqlalchemy/utils.py mode back to 644
cf41936 Move sqlalchemy migration from Nova
5758360 Raise ValueError if sort_dir is unknown
31c1995 python3: Add python3 compatibility support
3972c3f Migrate sqlalchemy utils from Nova
1a2df89 Enable H302 hacking check
3f503fa Add a monkey-patching util for sqlalchemy-migrate
7ba5f4b Don't use mixture of cfg.Opt() deprecated args

Change-Id: Ifddb91dc2c6b80668a07267f92f13074b974776b
Move db migration of ml2 security groups to havana

ml2 plugin is a havana feature. Currently securitygroups table are
created in chain of migration after havana release. It causes db
migration failure when migrating from havana to current head because
securitygroups table is attempted to be created although it was already
created by create_all().

Closes-bug: #1271231
Change-Id: If450bd95de7a5fdfdb2219cfbf7eb0c1323044bb
add router_id to response for CRU on fw/vip objs

Closes-Bug: #1231770
Change-Id: I3763d2af855d2ad28ff89b528264ba981e71c08a
Fix ValueError in ip_lib.IpRouteCommand.get_gateway()

As metric is not necessarily the 5th word of the gateway line, the
method should search the string 'metric' in the line and pick the next
word as the metric value.

Change-Id: I2663ddbae82f80b912b364c07f9ab92c5b90b718
Closes-Bug: #1267790
Add additional unit tests for the ML2 plugin

This commit adds extended unit test coverage for the ML2 plugin.py file.

Partial-Bug: 1236127

Change-Id: I2f4465c84810965679a585007cd9005ba8a7da71
Use six.moves.urllib.parse instead of urlparse

To keep Python 3.x compatibility, use six.moves.urllib.parse to
replace urlparse.

Closes-Bug: #1279611
Change-Id: I712035926f449e1bc5ab1fe85927369b826cb9cc
Ensure that session is rolled back on bulk creates

During bulk creates, the session is began explicitely;
ensure that it gets rolled back before re-raising in
order to avoid triggering InvalidRequestError
exceptions when the session is reused.

Partial-bug: 1244757

Change-Id: I797faeec2ca5374620db905599ab6e6f04fdcabd
L3 agent fetches the external network id once

Rather than fetching the id of the external network each time that
_process_routers is called, get it once and remember it.  If the agent
is ever requested to connect to a different ext-net then it will fetch
the current ext-net to double check for the unlikely event that the
ext-net has changed.  If it has then it will remember the new ext-net.

This is only applicable in the case where there is only one ext-net
that has not been configured explicitly in the config file.  That was
the only case that would cause an RPC message in the first place.

Change-Id: I40bbbf6233131ea5d40122ef9495fd3cb7dc823a
Closes-Bug: #1269567
remove unused imports

Change-Id: I39c0de99fac423858da8c76f6cfff27b21a65601
Closes-Bug:1279644