tls-psk-identity fix

[Sam Hartman]

>>>>> "Alan" == Alan DeKok <aland at deployingradius.com> writes:

    Alan> Kevin Wasserman wrote:
    >> Currently, the tls-psk-identity attribute is determined while the
    >> tls connection is established, but then discarded prior to packet
    >> decode.  The attached patch makes the tls-psk-identity attribute
    >> available during request processing. This is important for
    >> implementing constraint enforcement policy in Moonshot.

    Alan>   I've pushed a related fix.  We're trying to lower the number
    Alan> of #ifdef's in the code.

I don't see this on v3.0.x.