Update cgconfig lens, comments at the end of the line break cgconfig

Hi,

Currently cgconfig write comments at the end of the line.

```bash
$ augtool
augtool> set /files/etc/cgconfig.conf/mount/blkio /cgroup/blkio
augtool> set /files/etc/cgconfig.conf/mount/#comment 'Managed by puppet:openshift_origin'
augtool> save
Saved 1 file(s)

$ cat /etc/cgconfig.conf
mount {blkio=/cgroup/blkio; # Managed by puppet:openshift_origin
}
```

It breaks the cgconfig service, because only line starting with ’#’ is considered a comment line and is ignored.

```bash
$ /etc/init.d/cgconfig restart
Stopping cgconfig service:                                 [  OK  ]
Starting cgconfig service: error at line number 2 at #:syntax error
Error: failed to parse file /etc/cgconfig.conf
/sbin/cgconfigparser; error loading /etc/cgconfig.conf: Have multiple paths for the same namespace
Failed to parse /etc/cgconfig.conf                         [FAIL]
```

With this PR, the generated cgconfig.conf looks like this:

```bash
$ cat /etc/cgconfig.conf
mount {
blkio=/cgroup/blkio;
 # Managed by puppet:openshift_origin
}
```

And the cgconfig service works
```bash
$ /etc/init.d/cgconfig restart
Stopping cgconfig service:                                 [  OK  ]
Starting cgconfig service:                                 [  OK  ]
```

This issue was detected here:
https://github.com/openshift/puppet-openshift_origin/issues/301