Prelogin and login7 messages are missing some fields, leading to connection failures against certain endpoints

[raymondb1]

The connection id / activity id / sequence number should be populated with valid values and semantics similar to what the other drivers (OLEDB, ODBC / SqlClient(s)).

Those are very important for traceability and debugging purposes (they allow correlation between what a client might see and execution server side).

Also the client id and PID of the login 7 message should be populated - the spec defines them as:

• ClientID: The unique client ID (created by using the NIC address). ClientID is the MAC address of the physical network layer. It is used to identify the client that is connecting to the server.
• ClientPID: The process ID of the client application.