Convert package_name from array to string

[danieldreier]

puppet 4 seems to complain if the package_name parameter is an array.

[danielparks]

Alternatively:

  package { 'pgpool2':
    ensure => $package_ensure,
    name   => $package_name,
  }

Could become:

  package { $package_name:
    ensure => $package_ensure,
  }

Of course, that assumes that people aren't using Package['pgpool2']. I'm happy with whichever.

+1