add configtest td-agent.init


Hi,

I commited configtest at redhat initscript.
Please check it.

- reference : [Red Hat Nginx Init Script - nginx](http://wiki.nginx.org/RedHatNginxInitScript)


---


```
# /etc/init.d/td-agent
Usage: td-agent {start|stop|reload|restart|condrestart|status|configtest}
#
```

- td-agent.conf

```
<source>
  type forward
  port 24224
</source>

<match **>
  type file
  path /tmp/td-agent-unmatch
</match>
```

### start

```
# /etc/init.d/td-agent start
Starting td-agent:                                         [  OK  ]
#
```

### reload

```
# /etc/init.d/td-agent reload
Reloading td-agent:                                        [  OK  ]
#
```

### restart

```
# /etc/init.d/td-agent restart
Shutting down td-agent:                                    [  OK  ]
Starting td-agent:                                         [  OK  ]
#
```

---

chage td-agent.conf

```
<source>
  type forward
  port 24224
</source>

<match **>
  type file
  path /tmp/td-agent-unmatch
</matchh> # typo
```

### reload

Fail before it is reloaded.

```
# /etc/init.d/td-agent status
td-agent (pid  2495) is running...
#
# /etc/init.d/td-agent reload
2013-08-02 17:55:43 +0900 [error]: Dry run failed: parse error at td-agent.conf line 9
#
# /etc/init.d/td-agent status
td-agent (pid  2495) is running...
#
```

### restart

Fail before it is restarted.

```
# /etc/init.d/td-agent status
td-agent (pid  2495) is running...
#
# /etc/init.d/td-agent restart
2013-08-02 17:56:27 +0900 [error]: Dry run failed: parse error at td-agent.conf line 9
#
# /etc/init.d/td-agent status
td-agent (pid  2495) is running...
#
```