In CSIT, Entity Ownership is not reacquired after failover(OWNER node is killed)

In a 3-node cluster when owner node is killed, Entity ownership is not reacquired

Steps to reproduce,
1. Bring up a 3 node cluster
2. Set the managers of an OVS device to all 3 nodes in the cluster.
3. Kill the controller process for OWNER node.
5. Leadership assigned ,but Entity ownership is not reacquired.

Ref Test Log
============
https://logs.opendaylight.org/releng/jenkins092/ovsdb-csit-3node-clustering-only-boron/546/archives/log.html.gz

Below is Entity ownership details

After failover( owner node is killed)
=====================================
To JSON using : content={
"entity-owners": {
"entity-type": [
{
"entity": [
{
"candidate": [

{ "name": "member-1" }

,

{ "name": "member-3" }

],
"id": "/general-entity:entity[general-entity:name='ovsdb-southbound-provider",
"owner": "member-1"
}
],
"type": "ovsdb-southbound-provider"
},
{
"entity": [

{ "id": "ovsdb://uuid/26d3ec32-07b8-4865-8a30-46d237c2e756", "owner": "" }

,

{ "id": "ovsdb://uuid/8941bf9a-dfe8-4e64-936b-f544ff1c7a66", "owner": "" }

,

{ "id": "ovsdb://uuid/c6e9e4d3-bf7b-43f5-833f-eab5e7905939", "owner": "" }

],
"type": "ovsdb"
}
]
}
}

Details for Issue not occurred
==============================
To JSON using : content={
"entity-owners": {
"entity-type": [
{
"entity": [
{
"candidate": [

{ "name": "member-2" }

,

{ "name": "member-3" }

],
"id": "/general-entity:entity[general-entity:name='ovsdb-southbound-provider",
"owner": "member-3"
}
],
"type": "ovsdb-southbound-provider"
},
{
"entity": [
{
"candidate": [

{ "name": "member-2" }

,

{ "name": "member-3" }

],
"id": "ovsdb://uuid/15ee22b4-6210-415a-a4e4-8a247e1152db",
"owner": "member-3"
},

{ "id": "ovsdb://uuid/2797a8fe-e038-48c2-a1af-2b0b9cc1539b", "owner": "" }

,

{ "id": "ovsdb://uuid/c6e9e4d3-bf7b-43f5-833f-eab5e7905939", "owner": "" }

],
"type": "ovsdb"
}
]
}
}