Setting {ip, {127,0,0,1}} for syslog gen_tcp:connect results in badarg

[lukebakken]

Explanation is here:

https://groups.google.com/d/msg/rabbitmq-users/nv-wQiY0R_I/ktWYhsiWFwAJ

Introduced in #1718 / #1728

Fix will be to remove the ip option to *:connect