Comment 9 for bug 1518220

Reviewed: https://review.opencontrail.org/16825
Committed: http://github.org/Juniper/contrail-controller/commit/a8badbb045d86a5b28e425d4d4fed1a2d330f348
Submitter: Zuul
Branch: R2.21.x

commit a8badbb045d86a5b28e425d4d4fed1a2d330f348
Author: Naveen N <email address hidden>
Date: Wed Nov 25 14:06:50 2015 +0530

* Clear delete marked flag if list entry gets reused.
If a instance-ip is added and deleted in quick succesion
then that instance-ip would be present in the list with
delete marked flag set, and if the same instance-ip was
readded it would never be advertised.
Closes-bug:#1518220

Conflicts:
 src/vnsw/agent/oper/test/test_intf.cc

Change-Id: I0e8b6239504c9a9a84c013964b99e25b0f7a1f0f
(cherry picked from commit 185ff5c23ab0f1393974e27b5931f014f3c0f756)