Comment 4 for bug 1657173

This seems a legit error, I'm not sure changing what is managing it is going to solve the problem. Sshd fails to write the pid file, nothing should report that is starting correctly.
I was suspecting a selinux error, but audit log doesn't support my theory.
Now I've seen that the error about /var/run/sshd.pid not being readable can be seen also in passing job, butl looking at logstash, first occurrence of both this error and the string containing /var/run/sshd.pid not readable from systemd is 10th January in

http://logs.openstack.org/44/418344/1/check-tripleo/gate-tripleo-ci-centos-7-ovb-nonha/e4e2994/logs/undercloud/var/log/undercloud_install.txt

package diff from a job on 9th Jan doesn't show anything significant.
The openssh package has been changed recently (middle of december) from

openssh-6.6.1p1-25.el7.x86_64

to

openssh-6.6.1p1-31.el7.x86_64

it may worth a shot opening a bug against openssh-server