contrail-dns assert due to ConnectionState::instance_ already being present.
contrail-dns assert due to ConnectionState::instance_ already being present.

o Initialize Sandesh ConnectionStateManager before any other Sandesh Calls.
  ConnectionStateManager creates ConnectionState::instance_
o Remove deprecated code (Discovery Publish Callback)

Change-Id: I2764b7e31d0df28acd32110d635129a6623615e1
Closes-Bug: 1715558
(cherry picked from commit 4b933712cab48d165493e6ab3a91177fe46b75bb)

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