packstack: rdo-release update

Updates to how rdo-release is installed and baseurl updated.
Use the same basic layout as linux w/ rhel,fedora etc.

Change-Id: I46b3780aefd4cae1fa748664403a3c6d7f9b7409
linux-common: ntp moved out of linux-common

ntp is now setup via role dependency, this was redundant

Change-Id: I693802fcc33d95265974c018fdc977295a414dc5
packstack: remove call to workaround

A call to a workaround was merged in by mistake

Change-Id: Ieb8fdfdec17d1d26aa8660d6541fbbfffedc8c86
Set libvirt_type to qemu on kvm compute node

When a compute node is a kvm guest, set the libvirt_type to qemu. This
will only run if node_compute_fix is set to yes.

Change-Id: I2d8347640c55efe7d78ba9f71b7d8413f95b448e