Comment 5 for bug 1484796

Reviewed: https://review.opencontrail.org/13055
Committed: http://github.org/Juniper/contrail-controller/commit/a0716c768ac1d21296133a0bd7c1d57784f956a6
Submitter: Zuul
Branch: master

commit a0716c768ac1d21296133a0bd7c1d57784f956a6
Author: Prabhjot Singh Sethi <email address hidden>
Date: Fri Aug 14 11:27:52 2015 +0530

Intrusive pointer back reference infra

Changes to introduce intrusive pointer back reference
infra to manage back reference pointers of the objects
hold intrusive pointer reference.
incorporating use of this infra for VRF intrusive ptr
references to have better debug ability for VRF delete
timeout crash

Change-Id: I10d27af5a1f86067279ef788a8c99003dbc989f0
Closes-Bug: 1484796