Don't emit SG rule AFTER events until TX closed
Don't emit SG rule AFTER events until TX closed

Partially-Implements: blueprint push-notifications
Change-Id: Iddd1e51ee8dfbd15459c9d3fe78f0f0bd57927ea

huntxu/neutron,huntxu/neutron,eayunstack/neutron,openstack/neutron,noironetworks/neutron,mahak/neutron,noironetworks/neutron,mahak/neutron,mahak/neutron,openstack/neutron,eayunstack/neutron,openstack/neutron