Comment 2 for bug 1495542

Ultimately the following commands are run:

1. (1.20.11) juju --show-log bootstrap -e aws-upgrade-20-trusty-amd64 --constraints mem=2G
2. juju --show-log status -e aws-upgrade-20-trusty-amd64

3. juju --show-log deploy -e aws-upgrade-20-trusty-amd64 local:trusty/dummy-source
4. juju --show-log set -e aws-upgrade-20-trusty-amd64 dummy-source token=XXXXX
5. juju --show-log deploy -e aws-upgrade-20-trusty-amd64 local:trusty/dummy-sink
6. juju --show-log add-relation -e aws-upgrade-20-trusty-amd64 dummy-source dummy-sink
7. juju --show-log expose -e aws-upgrade-20-trusty-amd64 dummy-sink
8. juju --show-log status -e aws-upgrade-20-trusty-amd64

9. juju --show-log upgrade-juju -e aws-upgrade-20-trusty-amd64 --version 1.26-alpha1