CI Jenkinsfile: grab lock during add to global data
CI Jenkinsfile: grab lock during add to global data

Multiple workers add to global summary buffer,
or upload artifacts to master, safer to have a lock.

Signed-off-by: Olev Kartau <daa0e368367f231b2eec38ece459024257643988@intel.com>

ipuustin/intel-iot-refkit,YinThong/intel-iot-refkit,YinThong/intel-iot-refkit,mythi/intel-iot-refkit,mythi/intel-iot-refkit,klihub/intel-iot-refkit,intel/intel-iot-refkit,YinThong/intel-iot-refkit,ipuustin/intel-iot-refkit,YinThong/intel-iot-refkit,klihub/intel-iot-refkit,ipuustin/intel-iot-refkit,jairglez/intel-iot-refkit,ipuustin/intel-iot-refkit,jairglez/intel-iot-refkit,klihub/intel-iot-refkit,jairglez/intel-iot-refkit,YinThong/intel-iot-refkit,ipuustin/intel-iot-refkit,intel/intel-iot-refkit,intel/intel-iot-refkit,mythi/intel-iot-refkit,intel/intel-iot-refkit,YinThong/intel-iot-refkit,klihub/intel-iot-refkit,intel/intel-iot-refkit,intel/intel-iot-refkit,klihub/intel-iot-refkit,ipuustin/intel-iot-refkit,intel/intel-iot-refkit,YinThong/intel-iot-refkit,klihub/intel-iot-refkit,klihub/intel-iot-refkit,mythi/intel-iot-refkit,jairglez/intel-iot-refkit,ipuustin/intel-iot-refkit,mythi/intel-iot-refkit,jairglez/intel-iot-refkit,mythi/intel-iot-refkit,mythi/intel-iot-refkit,jairglez/intel-iot-refkit,jairglez/intel-iot-refkit