User accounts are configured during the following commands:
kayobe seed hypervisor host configure
kayobe seed host configure
kayobe overcloud host configure
The users are defined by the following variables:
seed_hypervisor_users
seed_users
controller_users
monitoring_users
The format required is described in the singleplatform-eng.users role
on Galaxy.
Any additional control plane hosts not in the controllers or monitoring
groups should define a 'users' variable.
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