Merge remote-tracking branch 'remotes/jsnow-gitlab/tags/python-pull-request' into...

Python patches

Peter: I expect this to address the iotest 040,041 failures you observed
on NetBSD. If it doesn't, let me know.

# gpg: Signature made Thu 03 Feb 2022 01:59:32 GMT
# gpg:                using RSA key F9B7ABDBBCACDF95BE76CBD07DEF8106AAFC390E
# gpg: Good signature from "John Snow (John Huston) <jsnow@redhat.com>" [full]
# Primary key fingerprint: FAEB 9711 A12C F475 812F  18F2 88A9 064D 1835 61EB
#      Subkey fingerprint: F9B7 ABDB BCAC DF95 BE76  CBD0 7DEF 8106 AAFC 390E

* remotes/jsnow-gitlab/tags/python-pull-request:
  python/aqmp: add socket bind step to legacy.py
  python: upgrade mypy to 0.780
  python/machine: raise VMLaunchFailure exception from launch()
  python/aqmp: Fix negotiation with pre-"oob" QEMU

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>