Embrane Tempest Compliance

This changeset tracks the changes needed by the Embrane's Neutron Plugin
in order to consistently  pass tempest tests.

Changes:

- Some db transactions were too long and were causing lock timeout
exception. Removed useless transactions (waiting on non-db tasks to complete)
to fix the problem.

- The operation filter was useless, and breaking the tests. Most of the
logic which guarantees the appliance correct state when an operation in executed
is now in the internal library used for the heleos APIs.
The filter was therefore removed (as well as the corresponding exception).

- Fixed "sync" mode. The behavior was incorrect due to the queue timeout.
Furthermore, parallel requests were not waiting on the correct thread.

- Added missing methods for floating IPs (not all the scenarios were covered).

- Minor bug fixes caught during the tests.

Change-Id: If081b50b4629158016ba421b94612a4cfac82257
Closes-Bug:1269098
BigSwitch: Use backend floating IP endpoint

Adds new floating IP REST calls for backend
controllers that support it. Adds backend
capability discovery mechanism.

Implements: blueprint bsn-floating-ip-endpoints
Change-Id: I2301d62a05d256867255865556625603918e84cf
Rename Neutron core/service plugins for VMware NSX

Short aliases are introduced for the NSX plugin(s). This patch
also switches to using the new plugin names/naming scheme in
the unit tests.

Partial-implements blueprint: nicira-plugin-renaming

Change-Id: If1f1431b098bf77b9c85e0afb3d7848083d9d451
options: consolidate options definitions

Some config options(interface_driver, use_namespaces) are defined
multiple times in ad-hoc way.  It causes DuplicateOptError exception
when using those module at the same time.  Right now the exception is
avoided in ad-hoc way by each executable.  Those duplicated
definitions should be consolidated and treated in uniformed way.

This is the blocker for blueprint: l3-agent-consolidation

neutron.services.loadbalancer.drivers.haproxy.agent periodic_interval
conflicts with neutron.service one. Since there is no way to fix it
without changing existing behavior/default value, it is untouched for now.

Closes-bug: #1279769
Change-Id: Ifed79b7ee0033644854499416f8a2b22a20416fe
Merge "options: consolidate options definitions"
Merge "Rename Neutron core/service plugins for VMware NSX"
Rename/remove Nicira NVP references from VMware NSX unit tests

This patch sweeps for Nicira and NVP references and replace
them with VMware and NSX where possible. Some clean-up is
done along the way to improve the organization of the
unit tests module.

Partial-implements blueprint: nicira-plugin-renaming

Change-Id: I48e4779ccec64ba300b26d4967d3f9fae7cfdc14
Merge "BigSwitch: Use backend floating IP endpoint"
Merge "Embrane Tempest Compliance"
Merge "Rename/remove Nicira NVP references from VMware NSX unit tests"
VPNaaS integration with service type framework

* adds new attribute 'provider' for vpnservice
* adds support for multiple drivers for vpn

Implements blueprint vpn-service-types-integration
DocImpact

Change-Id: I9e195dfaee21b1cf204cb9b9fc773bc9e5af5936
VPNaaS Service Driver for Cisco CSR

This has the service driver part of the vendor specific VPNaaS plugin.
The changes rely on the Service Type Framework code, which is presently
under review (client 53602, server 41827). The device driver will be
under a separate review.

Note: The Cisco plugin will require an out-of-band CSR setup and
      running for operation.

Note: See review 74156 for more details on device driver portion of
      this blueprint.

Change-Id: I39b1475c992b594256f5a28be0caa1ee9398050e
Partially-implements: blueprint vpnaas-cisco-driver