The LBaaS V2 plugin expects the driver to update the LB objects operating
status from a separate process/thread.
When the user requests the LB status (or just the LB object itself with GET),
the operating status is retrived from the LBaaS DB, without calling the driver.
To avoid adding a process to actively query and update all objects statuses,
this patch creates a new LBaaSV2 plugin, to be used instead of the default one.
This plugin (vmware_nsx_lbaasv2) will issue a get-statuses call to the driver,
update the current statuses in the DB, and call the original plugin.
Depends-on: I71a56b87144aad743795ad1295ec636b17429035
Change-Id: I3c4e75d92a1bacdb14292a8db727deb4923a85d9
bb0ea37a57