Pulsar tutorial issues

[hexylena]

• systemd is missing, requires Upstream our systemd additions ansible-pulsar#5
• In the "Starting Pulsar" and "Daemonizing" we are starting Pulsar by hand, why is that not done as part of the Ansible role (or playbook)? Then trainees can log in on the Pulsar machine just to look at the logs
• In the "Configure Galaxy" hands-on, it is not specified which job_conf.xml file should be modified, the one in /srv/galaxy/config/ or the one in ~/ansible/files/galaxy/config/ ? The second looks a better choice, but in any case we need to specify how to restart Galaxy (point 3), i.e. with supervisor or with ansible-playbook -i hosts galaxy.yml respectively.

[nsoranzo]

I've hijacked this issue to report other 2 possible problems in the Pulsar tutorial.

[hexylena]

Sounds good. Second point is part of first :)

[nsoranzo]

Addressed in #1445