Add support for PSK credentials with TLS
# gpg: Signature made Tue 03 Jul 2018 13:04:51 BST
# gpg: using RSA key
BE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg: aka "Daniel P. Berrange <berrange@redhat.com>"
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E 8E3F BE86 EBB4 1510 4FDF
* remotes/berrange/tags/qcrypto-next-pull-request:
crypto: Implement TLS Pre-Shared Keys (PSK).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>