add -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null
ex:
ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null jenkins-security@${ARM_SERVER_IP}
scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -pr jenkins-security@${ARM_SERVER_IP}:${CODE_PATH}/out/* sbl1_rpm/