jenkinsfile - put watchdog loop in another loop

api/Jenkinsfile.ble_test

@@ -87,12 +87,14 @@ pipeline {
                                 while ! pgrep -f "tail.*ble_test_${env.TEST_HASH}" > /dev/null; do
                                     sleep 1
                                 done
+                                while true; do
                                     while pgrep -f "tail.*ble_test_${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}"
                                         fi
                                         sleep 5
                                     done
+                                done
                                 exit
                             '
                     """