Discussion: remove dependency on neutron.manager in notification_handler

[Boden R]

This is a discussion bug in regards to the neutron-lib effort.
We want to break dependencies with neutron.manager and are specifically looking at uses of init().

Today notification_handler uses manager.init() to get reference to a plugin [1].

Is there a way we can refactor [1] to not use manager.init()?

Given some direction from the networking-infoblox team, I'm happy to do the refactoring. Or someone from the team and drive it.

[1] http://git.openstack.org/cgit/openstack/networking-infoblox/tree/networking_infoblox/neutron/common/notification_handler.py#n49