Trap error exit in deploy aio script

This make sure the check_failure called whenever the script exits
unexpectedly.

TrivialFix

Change-Id: If38e9ad42810deec48afd3f8b57387ae6ffd926c

tools/deploy_aio.sh

@@ -19,6 +19,8 @@ function check_failure {
     fi
 }
 
+trap check_failure EXIT
+
 # Populate globals.yml
 cat << EOF > /etc/kolla/globals.yml
 ---
@@ -36,6 +38,4 @@ ip l a fake_interface type dummy
 # Actually do the deployment
 tools/kolla-ansible -vvv deploy
 
-check_failure
-
 # TODO(SamYaple): Actually do functional testing of OpenStack