[apic_aim] Fix port status for newton
[apic_aim] Fix port status for newton

Add PROVISIONING_COMPLETE and other callback handler registrations to
ML2Plus initialization that were added to ML2 initialization in
newton.

Change-Id: If204541f07449730fedcf9595d2580d8d31761ac

noironetworks/group-based-policy,stackforge/group-based-policy,stackforge/group-based-policy,noironetworks/group-based-policy