Description of problem:

After `yum install redis-server`, systemd can't start redis-server. It says "User requested shutdown...".

The problem is that systemd requires redis-server NOT to run as a daemon, so the generated `/etc/redis.conf` requires `daemonize yes` to be commented out (or set to `no`).

How reproducible:

Steps to Reproduce:
1. rpm -i http://dl.fedoraproject.org/pub/epel/beta/7/x86_64/epel-release-7-0.2.noarch.rpm
2. yum install redis-server
3. systemctl start redis-server

Actual results:

systemctl status redis-server
redis-server.service - Redis persistent key-value database
   Loaded: loaded (/usr/lib/systemd/system/redis-server.service; disabled)
   Active: inactive (dead)

Expected results:

systemctl status redis-server
redis-server.service - Redis persistent key-value database
   Loaded: loaded (/usr/lib/systemd/system/redis-server.service; enabled)
   Active: active (running) since Thu 2014-07-31 13:37:13 EDT; 3 days ago

Additional info:

See http://serverfault.com/questions/616430/why-isnt-systemctl-starting-redis-server-on-centos-7/616557?noredirect=1#comment737913_616557