run bpftrace test only when requested, as it does not work on docker on ubuntu 19.04 (with `--privilege` option)
run bpftrace test only when requested, as it does not work on docker on ubuntu 19.04 (with `--privilege` option)

h2o/h2o,h2o/h2o,h2o/h2o,devnexen/h2o,yannick/h2o,cwyang/h2o,cwyang/h2o,cwyang/h2o,devnexen/h2o,yannick/h2o,h2o/h2o,devnexen/h2o,yannick/h2o,cwyang/h2o,h2o/h2o,cwyang/h2o,yannick/h2o,yannick/h2o,h2o/h2o,cwyang/h2o,devnexen/h2o,devnexen/h2o,h2o/h2o,yannick/h2o,devnexen/h2o,devnexen/h2o,yannick/h2o,h2o/h2o,h2o/h2o,cwyang/h2o,yannick/h2o,yannick/h2o,devnexen/h2o,cwyang/h2o,devnexen/h2o