Disable python buffering for gate checks

In order to ensure that the ansible output in the jenkins console
log is output as it comes it is necessary to turn off the python
output buffering.

Change-Id: I0f8f11cd04fdfd6c26d5a5afc0e8647648edb1bb

scripts/gate-check-commit.sh

@@ -68,6 +68,9 @@ fi
 # Enable debug logging for all services to make failure debugging easier
 echo "debug: True" | tee -a /etc/openstack_deploy/user_variables.yml
 
+# Disable the python output buffering so that jenkins gets the output properly
+export PYTHONUNBUFFERED=1
+
 # Run the ansible playbooks if required
 if [ "${RUN_PLAYBOOKS}" == "yes" ]; then
   # Set-up our tiny awk script.