Tune ansible configuration for better performance
This change will update our ansible configuration to ensure we're getting the best
possible performance when running ansible playbooks via mistral.
- sets the ansible option internal_poll_interval so that we lower overall cpu
- sets the ssh option PreferredAuthentications so that we're only offering
pubkeys when connecting to remote hosts which, in most cases, will save us
from attempting a PTR lookup.
Signed-off-by: Kevin Carter <firstname.lastname@example.org>
(cherry picked from commit