Bug 1181593

+++ This bug was initially created as a clone of Bug #1181591 +++

Description of problem:

There is no "Documentation=" line in "[Unit]" section of the
/usr/lib/systemd/service/sshd.service that references sshd's man pages.

That's why "systemctl status sshd.service" doesn't show the "Docs:"
section and "systemctl help sshd.service" doesn't open the man pages.

Version-Release number of selected component (if applicable):

openssh-server-6.4p1-8.el7.x86_64

How reproducible:

Query the sshd.service.

Steps to Reproduce:
1. systemctl status sshd.service
2. systemctl help sshd.service
3.

Actual results:

"systemctl status sshd.service" doesn't show a "Docs:" section

"systemctl help sshd.service" prints "Documentation for sshd.service not known." 


Expected results:

"systemctl status sshd.service" should show a "Docs:" section:
# systemctl status sshd.service
sshd.service - OpenSSH server daemon
   Loaded: loaded (/etc/systemd/system/sshd.service; enabled)
   Active: active (running) since Mon 2015-01-12 13:58:24 CET; 23h ago
     Docs: man:sshd(8)
           man:sshd_config(5)
[...]


"systemctl help sshd.service" should open the man pages.

Additional info:

The Documentation= line in sshd.service could look like this:

# cat sshd.service
[Unit]
Description=OpenSSH server daemon
Documentation=man:sshd(8) man:sshd_config(5)

The same applies to /usr/lib/systemd/service/sshd.socket.

Also, there are some other systemd unit files without a "Documentation=" line.
You should probably add a generic test for that.