Allow for future use of AF_UNSPEC in AsyncSocket library
Create a socketFamily switch in AsyncSocket_Connect and
AsyncSocket_ConnectWebSocket for future IPv6 integration.
Allow for future use of AF_UNSPEC when a connection does not care if it is
AF_INET or AF_INET6. Since AsyncSocket does not fully support AF_INET6 yet and
our AF_INET6 test bed is not yet completed, hard code all callers to AF_INET.