Docs are wrong for nova::scheduler::filter::scheduler_default_filters

[Mark T. Voelker]

The docstring for this parameter says that it should be specified as a comma-separated string:

# [*scheduler_default_filters*]
# (optional) A comma separated list of filters to be used by default
# Defaults to false

However the code actually expects an array which it will join into a string:

  if ($scheduler_default_filters) {
    nova_config { 'DEFAULT/scheduler_default_filters': value => join($scheduler_default_filters,',')
    }
  } else {
    nova_config { 'DEFAULT/scheduler_default_filters': ensure => absent
    }
  }