XenServer: Add XenServer support

Upstreaming several changes from XenServer CI:
 - Use tty0 as console - thus the user can see what's happening during
   installation over VNC console.
 - Set the number of VCPUs to 6 for the DomU appliance
 - Add prepare_node_xenserver.sh script.
 - Use testing xva 1.1.4 which has trusty.

Change-Id: I56fc4e1af12f3f13fd1aa0b772bd8734b412d3d5

nodepool/scripts/convert_node_to_xenserver.sh

@@ -312,7 +312,7 @@ function generate_xs_installer_grub_config() {
 exec tail -n +3 \$0
 menuentry 'XenServer installer' {
     multiboot $bootfiles/xen.gz dom0_max_vcpus=1-2 dom0_mem=max:752M com1=115200,8n1 console=com1,vga
-    module $bootfiles/vmlinuz xencons=hvc console=tty0 console=hvc0 make-ramdisk=/dev/sda1 answerfile=$answerfile install
+    module $bootfiles/vmlinuz xencons=hvc console=tty0 make-ramdisk=/dev/sda1 answerfile=$answerfile install
     module $bootfiles/install.img
 }
 EOF
@@ -403,7 +403,9 @@ function start_ubuntu_on_next_boot() {
 
     bootfiles="$1"
 
-    sed -ie 's,default xe-serial,default ubuntu,g' $bootfiles/extlinux.conf
+    sed -ie 's,default xe,default ubuntu,g' $bootfiles/extlinux.conf
+
+    log_extlinux $bootfiles/extlinux.conf
 }
 
 function start_xenserver_on_next_boot() {
@@ -411,7 +413,18 @@ function start_xenserver_on_next_boot() {
 
     bootfiles="$1"
 
-    sed -ie 's,default ubuntu,default xe-serial,g' $bootfiles/extlinux.conf
+    sed -ie 's,default ubuntu,default xe,g' $bootfiles/extlinux.conf
+
+    log_extlinux $bootfiles/extlinux.conf
+}
+
+function log_extlinux() {
+    local extlinux_conf
+
+    extlinux_conf="$1"
+
+    echo "ACTUAL STATE OF EXTLINUX IS"
+    cat $extlinux_conf
 }
 
 function mount_dom0_fs() {
@@ -474,6 +487,8 @@ function configure_networking() {
     if [ -z "$VM" ]; then
         VM=$(xe vm-import filename=/mnt/ubuntu/root/staging_vm.xva)
         xe vm-param-set name-label="$APPLIANCE_NAME" uuid=$VM
+        xe vm-param-set VCPUs-max=6 uuid=$VM
+        xe vm-param-set VCPUs-at-startup=6 uuid=$VM
         APP_IMPORTED_NOW="true"
     fi
     DNS_ADDRESSES=$(echo "$NAMESERVERS" | sed -e "s/,/ /g")

nodepool/scripts/install_xenserver.sh

@@ -19,5 +19,5 @@
 
 ./convert_node_to_xenserver.sh \
     password \
-    http://downloads.vmd.citrix.com/OpenStack/xenapi-in-the-cloud-appliances/1.0.1.xva \
+    http://downloads.vmd.citrix.com/OpenStack/xenapi-in-the-cloud-appliances/1.1.4.xva \
     devstack

nodepool/scripts/prepare_node_xenserver.sh

@@ -0,0 +1,44 @@
+#!/bin/bash -xe
+
+# Copyright (C) 2011-2013 OpenStack Foundation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+#
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+HOSTNAME=$1
+
+function tsfilter {
+    $@ 2>&1 | awk '
+    {
+        cmd ="date +\"%Y-%m-%d %H:%M:%S.%3N | \""
+        cmd | getline now
+        close("date +\"%Y-%m-%d %H:%M:%S.%3N | \"")
+        sub(/^/, now)
+        print
+        fflush()
+    }'
+}
+
+set -o pipefail
+tsfilter ./prepare_node_devstack.sh "$HOSTNAME"
+
+# After the node has been prepared, the hypervisor needs to be halted to make
+# sure that the filesystem is in a consistent state.
+sudo -u domzero \
+    ssh \
+        -o StrictHostKeyChecking=no \
+        -o UserKnownHostsFile=/dev/null \
+        root@192.168.33.2 \
+            halt -p </dev/null