Support installing OpenStack on XenServer 7.0

XenServer 7.0 has changed some iso files' name, this made devstack script
install_os_domU.sh failed to install VM before installing OpenStack. This
patch is to fix the problem, make install_os_domU.sh support 7.0 and other
prior versions of XenServer

Change-Id: I49459bfff2b101fc6927eb4578c5eb47cc8c3ad6
diff --git a/tools/xen/install_os_domU.sh b/tools/xen/install_os_domU.sh
index 8b97265..3a61215 100755
--- a/tools/xen/install_os_domU.sh
+++ b/tools/xen/install_os_domU.sh
@@ -183,10 +183,8 @@
         # Copy the tools DEB to the XS web server
         XS_TOOLS_URL="https://github.com/downloads/citrix-openstack/warehouse/xe-guest-utilities_5.6.100-651_amd64.deb"
         ISO_DIR="/opt/xensource/packages/iso"
-        XS_TOOLS_FILE_NAME="xs-tools.deb"
-        XS_TOOLS_PATH="/root/$XS_TOOLS_FILE_NAME"
         if [ -e "$ISO_DIR" ]; then
-            TOOLS_ISO=$(ls -1 $ISO_DIR/xs-tools-*.iso | head -1)
+            TOOLS_ISO=$(ls -1 $ISO_DIR/*-tools-*.iso | head -1)
             TMP_DIR=/tmp/temp.$RANDOM
             mkdir -p $TMP_DIR
             mount -o loop $TOOLS_ISO $TMP_DIR