HA: Honour all hiera override variables in mysql_bundle
During a major upgrade, upgrade tasks can rebuild a new pacemaker
cluster by adding nodes one at a time. This is implemented by
using two special hiera variables mysql_node_names_override and
Make sure the mysql_bundle puppet module uses both variables
when such cluster rebuild is in progress.
Co-Authored-By: Jose Luis Franco Arza <firstname.lastname@example.org>
(cherry picked from commit