Add sunrpc_tcp and sunrpc_udp to UNIX EntityStateEndpointType and EntityItemEndpointType

[drothenberg]

The EntityStateEndpointType and EntityItemEndpointType currently allow stream, dgram, raw, seqpacket, tli, and empty string. However, to properly support the inetd_test on AIX we need to add sunrpc_tcp and sunrpc_udp.

This change will not affect other versions of UNIX.

See OVAL Sandbox Issue 140 (OVALProject/Sandbox#140).

[drothenberg]

Fixed in 75fe9.