[socket] client socket(s) is configurable, bind and port
[rabbitmq] on_failure config option
           - users may choose to reconnect to rabbitmq on tcp connection failure, "rabbitmq": {"on_failure": "reconnect"}
Merge pull request #616 from portertech/rabbitmq

RabbitMQ on_failure config option, reconnect on TCP failure
Merge pull request #615 from portertech/socket

Client socket(s) configuration, bind and port
[beta] beta version bump, updated changelog
Merge pull request #617 from portertech/beta

[beta] beta version bump, updated changelog