Only print "Setting DNS" message if debug mode is on.

wicd/wnettools.py

@@ -522,6 +522,7 @@ class BaseInterface(object):
         for dns in (dns1, dns2, dns3):
             if dns:
                 if misc.IsValidIP(dns):
+                    if self.verbose:
                         print 'Setting DNS : ' + dns
                     valid_dns_list.append("nameserver %s\n" % dns)
                 else: