devstack: Add paths specific to XenServer Core

 * 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
diff --git a/tools/xen/scripts/manage-vdi b/tools/xen/scripts/manage-vdi
index 05c4b07..381e671 100755
--- a/tools/xen/scripts/manage-vdi
+++ b/tools/xen/scripts/manage-vdi
@@ -32,7 +32,7 @@
   vbd_uuid=$1
 
   dev=$(xe_min vbd-list params=device uuid="$vbd_uuid")
-  if [[ "$dev" =~ "sm/" ]]; then
+  if [[ "$dev" =~ "sm/" || "$dev" =~ "blktap-2/" ]]; then
     DEBIAN_FRONTEND=noninteractive \
         apt-get --option "Dpkg::Options::=--force-confold" --assume-yes \
         install kpartx &> /dev/null || true
@@ -49,7 +49,7 @@
 
 function clean_dev_mappings() {
   dev=$(xe_min vbd-list params=device uuid="$vbd_uuid")
-  if [[ "$dev" =~ "sm/" ]]; then
+  if [[ "$dev" =~ "sm/" || "$dev" =~ "blktap-2/" ]]; then
     kpartx -dv "/dev/$dev"
   fi
 }