Steps to reproduce
===========================
1)Create All Controller Sessions
2)Take Down Leader Of Default Shard and bring it up
3)Create Networks and Create Subnets For net_1 ,Create Subnets For net_2,Add Ssh Allow All Rule
4)Create Vm Instances For net_1
  Create Vm Instances For net_2
  Check Vm Instances Have Ip Address
5)Create Router router_2, router_3 and add interfaces to this router
6) Take Down ODL1
7) Bring up ODL1 and take down ODL2
8) Bring up ODL2 and take down ODL3
9) Bring up ODL3
10) Ping  all Vm Instance1 In net_2 From net_1
  Ping all Vm Instance1 In net_1 From net_2
  Connectivity Tests From Vm Instance1 In net_1 In Healthy Cluster
11) Take Down ODL1 and ODL2
  Connectivity Tests From Vm Instance1 In net_1 With Two ODLs Down
12)Bring Up ODL1 and ODL2

13)Take Down ODL2 and ODL3
  Connectivity Tests From Vm Instance1 In net_2
 
  sudo ip netns exec qdhcp-fe7cf9 b9-1880-4df0-83e5-83a555d591a6 ssh -o MACs=hmac-sha1 -o ConnectTimeout=5 -o Stri ctHostKeyChecking=no cirros@37.0.0.11 -o UserKnownHostsFile=/dev/null
  No match found for 'password:' in 10 seconds Output: ssh: connect to host 37.0.0.11 port 22: Connection timed out [jenkins@sandbox-07429-2-1-devstack-queens-0 ~]> .
 

Logs

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https://logs.opendaylight.org/releng/vex-yul-odl-jenkins-1/builder-copy-sandbox-logs/644