virt-install: Unbuffer stdout
So that we don't have error messages followed by all of the
expected output, and we get progress as it happens.
-#!/usr/bin/python3
+#!/usr/bin/python3 -u
# Wrapper for virt-install designed to run in a container
# environment, and using defaults targeted for CoreOS.
# https://github.com/cgwalters/coreos-assembler/issues/7
