* XenServer Core keeps its Xapi plugins in a different path to XenServer,
in order to comply with the Filesystem Hierarchy Standard.
* XenServer Core mounts devices under /dev/xen/blktap-2 in dom0,
whereas XenServer mounts them under /dev/sm.
Change-Id: I0a66cd03f000f19c8ff63a8ae4231c00fda88380