Comment 2 for bug 1676833

Scanning existing logs, nothing seems to be taking too much CPU so far. Only visible problems are:

- a unusual pressure on undercloud keystone wsgi, caused mostly by zaqar
- this error by mistral for zaqar

http://logs.openstack.org/periodic/periodic-tripleo-ci-centos-7-ovb-updates/34e165c/logs/undercloud/var/log/mistral/executor.txt.gz#_2017-03-28_07_10_16_163