ref(router): just use go. remove bash script

This PR introduce a change in the nginx log configuration.

The nginx firewall logs PR (#2063) use a different output file and it cannot be a device (it just swallow the logs), this is the reason why the go boot app uses the tail approach to redirect the output from the file to stdout and stderr. Searching for the firewall log problem I found this http://trac.nginx.org/nginx/ticket/632

this can be optimized into a one-liner, as per go's standard idioms:

```
if err := cmd.Start(); err != nil {
    panic(err)
}
```