jenkinsfile - watch screen test sleep before starting kill loop

api/Jenkinsfile.ble_test

@@ -85,6 +85,7 @@ pipeline {
                     ssh -o StrictHostKeyChecking=no root@${params.host_ip} -o ServerAliveInterval=60 -o ServerAliveCountMax=120 << EOF
                         echo Running background termination loop I hope...
                         (
+                            sleep 10
                             while pgrep -f "tail.*ble_test_${env.TEST_HASH}" > /dev/null; do
                                 if ! screen -list | grep -q ble_test_${env.TEST_HASH}; then
                                     pkill -9 -f "tail.*ble_test_${env.TEST_HASH}"