Feature: Allow hostnames in excluded_routes

[kmille]

for route in excluded_routes:
  if hostname
   resolve
   for each ip in resolved_ips:
     add to excluded rules

[kmille]

fixed by 6baa55e07feae04f75be59ae9bb72e109601a15a

[kmille]

args, not working if dns resolves multiple ip addresses. Use socket.gethostbyname_ex instead.

In [2]: socket.gethostbyname("www.fleaz.me")
Out[2]: '34.141.72.9'
In [4]: socket.gethostbyname_ex("www.fleaz.me")
Out[4]: ('hardcore-dubinsky-406505.netlify.com', [], ['34.141.72.9', '35.156.224.161'])

[kmille]

fixed