Modifications to support using this in Shopify

[peterjm]

1. Added the ability to record on all ports.
2. Always serialize the session, even if close isn't called on the sockets.
3. Modify the TCPSocket class directly, instead of relying on TCPSocket.open to be called. This means sockets opened with TCPSocket.new will also be recorded.
4. Apply the same logic to OpenSSL::SSL::SSLSocket, in addition to TCPSocket
5. Stub out both the gets and the connect methods.