We've moved all roles/tasks to use ansible_host instead of
ansible_ssh_host, since this is the new approach for Ansible.
There were a few left-overs which this PR fixes:
* Documentation in sample swift-remote.yml file
* Print hosts (IP) for the inventory-manage.py script lib.
* galera-cluster-rolling-restart - this will default to ansible_ssh_host
if ansible_host is not specified, although it should be if the inventory
has run.
Change-Id: I45e47e6d31966598c60c938861630e182d31efe5
923b23204f