Fix VPN agent does not handle multiple connections per vpn service

    Once the OpenSwan process is created, incoming updated vpnservice
data would not be updated into the process class which leads to config
files and openswan process always keep old configurations

Change-Id: Ia91ab08b1d03fbbe46bafd4967b57181fc4c6e71
Closes-Bug: 1263194
Fix webob.exc.HTTPForbidden parameter miss

HTTPForbidden should use the parameter 'explanation'
instead of 'detail'.
This patch fixes this bug.

Change-Id: I4c66697daf0ce9e00c8820311dc7141eacd7e733
Closes-Bug: #1283872
Introduce status for floating IPs

Add a new 'status' attribute to the floating IP resource.
Extend the plugin RPC interface for allowing status updates from agents,
and implement support for operational status in the L3 agent.

The default behaviour for all the plugins different from
neutron.services.l3_router.l3_router_plugin is to set the status of
a floating IP to ACTIVE upon creation.

Implements blueprint fip-op-status
Change-Id: Ib0176fbcde95b0db5dfdabd4fc297d1d29c0d604
nec plugin: Avoid long transaction in delete_ports

db_plugin.delete_ports() can lead to long transaction
if plugin.deleete_port talks with external system.
This commit removes a transaction in delete_ports and
allows NEC plugin to use more granular db transactions
in delete_port. It greatly helps db race conditions and
timeouts in delete_port operations.

To avoid to impact other plugins/drivers by changing
db_plugin.delete_ports directly and to land this patch soon,
this commit overrides delete_ports() in NEC plugin.
Further disssion on transaction in delete_ports will be
discussed under bug 1282925.

Closes-Bug: #1282922
Related-Bug: #1282925

Change-Id: I2c00694ad34eb2058bf7a0ff1c920ceded327d43
Remove call to addCleanup(cfg.CONF.reset)

The addCleanup(cfg.CONF.reset) is done by base class,
therefore no need to invoke it from mlnx agent unit test setUp method.

Change-Id: Ie7e55d92e63a28699d8fec7c63951449eb7c0a50
Closes-Bug: 1286716
Merge "nec plugin: Avoid long transaction in delete_ports"
Merge "Fix webob.exc.HTTPForbidden parameter miss"
Merge "Fix VPN agent does not handle multiple connections per vpn service"
Merge "Introduce status for floating IPs"