Create DNSServer command

[mrbrutti]

Create a malicious DNSServer that could allow a tester to work with router hacks such as the recent ones pop-ing up in the itnernez Library Candidate:

• https://github.com/ioquatix/rubydns

$ cartero DNSServer --dns test.example.com --ip 10.10.10.1
$ cat dns_hooks.json
[
{  "dns" : "test.example.com", "ip" : "10.10.10.1" },
{  "dns" : "test2.example.com", "ip" : "10.10.10.2" },
{  "dns" : "test3.example.com", "ip" : "10.10.10.3" }
]
$ cartero DNSServer --file dns_hooks.json

[mrbrutti]

Work Done... Will be part of next commit.