Ability to specify service name

[w1r0x]

Now we specify naming of services in my dict by its name in mesos. But when we have two services in different groups that names ident we can't discover both of them.

So we need to specify it like this:

services: [
 {
        "myname": "memcached_sessions"
        "name": "memcached",
        "group": "sessions.production"
},
{
        "myname": "memcached_cache"
        "name": "memcached",
        "group": "cache.production"
}
]

[Difrex]

I don't like myname. It is bad keyword :)

How about nickname?

[w1r0x]

myname is just example
nickname is always about a person. We should use other name.