Code review comment for ~paelzer/ubuntu/+source/haproxy:bug-1848902-hang-on-exit-143-BIONIC

Figured out a way to hackaround the rate limiter in the test case for the SRU template:

for x in {1..100}; do pkill -TERM -x haproxy ; sleep 0.1 ; systemctl reset-failed haproxy.service; done

With that, the test case should result in success with the fixed case.

Otherwise, once you hit x==6 in the loop systemd just kills off the service and you don't exercise the test coverage for the remaining 95 steps of the counter. I couldn't find a way to configure this per-service (I experimented with StartLimitBurst=101 and StartLimitIntervalSec=<N> but no effect), and didn't spot a way to configure this in systemd globally), but the brute force reset-failed should be sufficient for the test case.