Fix minor memory leak in bgp_xmpp_rtarget_manager_test
Fix minor memory leak in bgp_xmpp_rtarget_manager_test

autp_ptr needs to be reset() (not release()) in order to free the object

Change-Id: Ic6086e48b496add28790ae26ab88312c66ad40e8
Partial-Bug: #1537933

eonpatapon/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,nischalsheth/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller,nischalsheth/contrail-controller,nischalsheth/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,rombie/contrail-controller,eonpatapon/contrail-controller,rombie/contrail-controller,nischalsheth/contrail-controller