Adds vagrant cachier to Vagrantfile.
Adds vagrant cachier to Vagrantfile.

* by caching rpm etc this speeds up vagrant
  boxes a lot

more info here: https://github.com/fgrehm/vagrant-cachier

tuxmea/opennebula-puppet-module,gerald1248/opennebula-puppet-module,pdrakeweb/opennebula-puppet-module,endocode/opennebula-puppet-module,endocode/opennebula-puppet-module,pdrakeweb/opennebula-puppet-module,arnetogo/opennebula-puppet-module,rwaffen/opennebula-puppet-module,gerald1248/opennebula-puppet-module,gerald1248/opennebula-puppet-module,rwaffen/opennebula-puppet-module,epost-dev/opennebula-puppet-module,epost-dev/opennebula-puppet-module,endocode/opennebula-puppet-module,tuxmea/opennebula-puppet-module,arnetogo/opennebula-puppet-module,arnetogo/opennebula-puppet-module,gerald1248/opennebula-puppet-module,pdrakeweb/opennebula-puppet-module,rwaffen/opennebula-puppet-module,arnetogo/opennebula-puppet-module,rwaffen/opennebula-puppet-module,fasrc/opennebula-puppet-module,epost-dev/opennebula-puppet-module,tuxmea/opennebula-puppet-module,epost-dev/opennebula-puppet-module,endocode/opennebula-puppet-module,fasrc/opennebula-puppet-module,pdrakeweb/opennebula-puppet-module,tuxmea/opennebula-puppet-module,fasrc/opennebula-puppet-module,fasrc/opennebula-puppet-module