Adding tar as a dependency

tar is required to copy puppet modules to remote hosts

Change-Id: I7bf7c63e3a2a4c87cbb9f1024874232c21f104ef
Set the service provider to systemd for Fedora >= 18

init no longer works as the service provider for libvirtd on F18
https://bugzilla.redhat.com/show_bug.cgi?id=903871

Change-Id: I1423f7c761a351a4a33913c8698028df4f447092
Merge "Set the service provider to systemd for Fedora >= 18" into folsom