Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into...

Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into staging

Python 3 compatibility fixes

# gpg: Signature made Fri 25 Jan 2019 14:04:56 GMT
# gpg:                using RSA key 2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/python-next-pull-request:
  decodetree: re.fullmatch was added in 3.4
  device-crash-test: Python 3 compatibility fix

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