Fix test_quic_multistream to allow multiple concurrent tests

The server port was hard coded to 8186.  That could make for some
"interesting" effects if two instances of this same test was running
on the same machine.

This change binds the server interface with port 0, and captures the
resulting random port.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22025)

0 files changed, 0 insertions, 0 deletions