Comment 9 for bug 1706772

We're also hitting this issue on our grenade job on ocata http://logs.openstack.org/04/480904/10/check/gate-grenade-dsvm-ironic-ubuntu-xenial/a13a964/logs/new/screen-n-cpu.txt.gz. In this case, placement start causes apache restart, and compute is started at the same time. Will propose a patch to grenade and see if it'll break anything.