[VOL-3352] Fix sshpass issue for login to onos

Change-Id: If758d547044be99d3b10fef5a09c1718800751f6
diff --git a/Jenkinsfile-voltha-build b/Jenkinsfile-voltha-build
index 807c4b6..844798e 100644
--- a/Jenkinsfile-voltha-build
+++ b/Jenkinsfile-voltha-build
@@ -299,7 +299,7 @@
                             }
                             xconnect_out = sh returnStatus: true, script: """
                             sleep 30
-                            version=\$(sshpass -p karaf ssh -p 30115 karaf@${deployment_config.nodes[0].ip} "summary" | grep version)
+                            version=\$(sshpass -p karaf ssh -q -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -p 30115 karaf@${deployment_config.nodes[0].ip} "summary" | grep version)
                             sleep 10
                             if [[ \$version == *"version=2.2"* ]]; then
                                 curl -X POST --user karaf:karaf --header 'Content-Type: application/json' --header 'Accept: application/json' -d '{"deviceId": "${deployment_config.fabric_switches[0].device_id}", "vlanId": "${deployment_config.hosts.src[i].s_tag}", "endpoints": [${deployment_config.fabric_switches[0].bngPort},${aggPort}]}' 'http://${deployment_config.nodes[0].ip}:30120/onos/segmentrouting/xconnect'