version bump to 4.2.8
version bump to 4.2.8

scottylogan/puppet-virtualbox,TORO-IO/puppet-virtualbox,boxen/puppet-virtualbox,scottylogan/puppet-virtualbox,TORO-IO/puppet-virtualbox,RallySoftware/boxen-virtualbox,RallySoftware/boxen-virtualbox,boxen/puppet-virtualbox