The `always_run` key is deprecated and being removed in Ansible 2.4.
Using it causes a warning to be displayed:
[DEPRECATION WARNING]: always_run is deprecated.
This patch changes all instances of `always_run` to use the `always`
tag, which causes the task to run each time the playbook runs.
This playbook could be used in the future to install anything else we
need on these nodes for testing purposes.
Signed-off-by: Andrew Schoen <aschoen@redhat.com>