Log Message:
security/ruby-rex-socket: update to 0.1.12

0.1.12 (2018/03/21)

* Land #9, improve SSL certificate generation
* fix is_mac_addr to validate if something is _only_ a mac address
* Improve SSL certificate generation

0.1.11 (2018/02/09)

* Land #8, factor out SSL bits
* Address Brent's comment - drop @@loaded_openssl
* Implement a certificate provider pattern in Socket
* Extract and mixin cert ops from server module