Make sure lvm2 tools are installed

* modules/openstack_project/manifests/template.pp: Add the lvm2
package, since we use it in some places and it's really a fairly
base-level system block device management toolset these days. The
package name is the same in CentOS, Debian, Fedora and Ubuntu.

Change-Id: I5f1d5794559de268ab009c4875b44d360f7ebd59
Merge "Make sure lvm2 tools are installed"