xenapi: Ubuntu installation repository/proxy fix

Get rid of UBUNTU_INST_REPOSITORY, use UBUNTU_INST_HTTP_HOSTNAME and
UBUNTU_INST_HTTP_DIRECTORY instead. User can also specify
UBUNTU_INST_HTTP_PROXY to utilize a proxy for the OpenStack VM
installation. The answer file will be edited to contain the specified
values. Also get rid of the magic, undocumented MIRROR variable.

This is related to blueprint xenapi-devstack-cleanup

Change-Id: Ic9fc564c4ad0f43e2e536854335ebe14791d0255

tools/xen/install_os_domU.sh

@@ -250,12 +250,13 @@ if [ -z "$templateuuid" ]; then
             mkdir -p $HTTP_SERVER_LOCATION
         fi
         cp -f $THIS_DIR/devstackubuntupreseed.cfg $HTTP_SERVER_LOCATION
-        MIRROR=${MIRROR:-""}
-        if [ -n "$MIRROR" ]; then
-            sed -e "s,d-i mirror/http/hostname string .*,d-i mirror/http/hostname string $MIRROR," \
+
+        sed \
+            -e "s,\(d-i mirror/http/hostname string\).*,\1 $UBUNTU_INST_HTTP_HOSTNAME,g" \
+            -e "s,\(d-i mirror/http/directory string\).*,\1 $UBUNTU_INST_HTTP_DIRECTORY,g" \
+            -e "s,\(d-i mirror/http/proxy string\).*,\1 $UBUNTU_INST_HTTP_PROXY,g" \
             -i "${HTTP_SERVER_LOCATION}/devstackubuntupreseed.cfg"
     fi
-    fi
 
     # Update the template
     $THIS_DIR/scripts/install_ubuntu_template.sh $PRESEED_URL

tools/xen/scripts/install_ubuntu_template.sh

@@ -69,11 +69,16 @@ fi
 
 xe template-param-set uuid=$new_uuid \
     other-config:install-methods=http \
-    other-config:install-repository="$UBUNTU_INST_REPOSITORY" \
+    other-config:install-repository="http://${UBUNTU_INST_HTTP_HOSTNAME}${UBUNTU_INST_HTTP_DIRECTORY}" \
     PV-args="$pvargs" \
     other-config:debian-release="$UBUNTU_INST_RELEASE" \
     other-config:default_template=true \
     other-config:disks='<provision><disk device="0" size="'$disk_size'" sr="" bootable="true" type="system"/></provision>' \
     other-config:install-arch="$UBUNTU_INST_ARCH"
 
+if ! [ -z "$UBUNTU_INST_HTTP_PROXY" ]; then
+    xe template-param-set uuid=$new_uuid \
+        other-config:install-proxy="$UBUNTU_INST_HTTP_PROXY"
+fi
+
 echo "Ubuntu template installed uuid:$new_uuid"

tools/xen/xenrc

@@ -64,7 +64,9 @@ UBUNTU_INST_TEMPLATE_NAME="Ubuntu 11.10 (64-bit) for DevStack"
 # XenServer 6.1 and later or XCP 1.6 or later
 # 11.10 is only really supported with XenServer 6.0.2 and later
 UBUNTU_INST_ARCH="amd64"
-UBUNTU_INST_REPOSITORY="http://archive.ubuntu.net/ubuntu"
+UBUNTU_INST_HTTP_HOSTNAME="archive.ubuntu.net"
+UBUNTU_INST_HTTP_DIRECTORY="/ubuntu"
+UBUNTU_INST_HTTP_PROXY=""
 UBUNTU_INST_LOCALE="en_US"
 UBUNTU_INST_KEYBOARD="us"
 # network configuration for ubuntu netinstall