Don't use ironic-conductor element

This removes usage of the ironic-conductor element in favor of using
puppet instead.

However, puppet-ironic does not yet have full support for configuring
ipxe and tftp, so we still need to make use of 88-setup-ipxe and
69-ironic-tftp-support. Since those bash scripts need to run after
puppet has installed all the needed packages, they are moved to be
os-refresh-config scripts instead. This should be fine since those
scripts are idempotent.

blueprint undercloud-elements
Change-Id: I1a8c97e56309940e0a4394b7ed8c20e8e0c3c9a9

elements/ipxe/package-installs.yaml

@@ -1,2 +0,0 @@
-httpd:
-ipxe-bootimgs:

elements/puppet-stack-config/puppet-stack-config.pp

@@ -560,6 +560,7 @@ package{'syslinux-extlinux': }
 package{'tftp-server': }
 package{'parted': }
 package{'psmisc': }
+package{'ipxe-bootimgs': }
 
 service { 'sshd':
   ensure => running,

elements/undercloud-install/os-refresh-config/configure.d/69-ironic-tftp-support

@@ -0,0 +1,61 @@
+#!/bin/bash
+set -eux
+set -o pipefail
+
+# setup tftp directory structure
+if [ -f /usr/lib/syslinux/pxelinux.0 ]; then
+    # Ubuntu
+    pxe_zero="/usr/lib/syslinux/pxelinux.0"
+elif [ -f /usr/share/syslinux/pxelinux.0 ]; then
+    # Fedora/RHEL
+    pxe_zero="/usr/share/syslinux/pxelinux.0"
+else
+    echo "Failed to find pxelinux.0."
+    exit 1
+fi
+
+# create tftpboot and cache directories
+install -d -m 0755 -o ironic -g ironic /tftpboot/pxelinux.cfg/
+install -o ironic -g ironic -m 744 $pxe_zero /tftpboot/pxelinux.0
+
+# for newer syslinux versions we may need to copy in the library
+# modules as well (Fedora 21 for example)
+if [ -f /usr/share/syslinux/ldlinux.* ]; then
+    # Fedora/RHEL
+    cp /usr/share/syslinux/ldlinux.* /tftpboot
+fi
+
+# Copy in the chain loader for full disk image booting.
+syslinux='/usr/share/syslinux'
+for f in chain.c32 libcom32.c32 libutil.c32; do
+    if [ -f $syslinux/$f ]; then
+        cp $syslinux/$f /tftpboot
+    fi
+done
+
+# Disable the tftp-hpa upstart job, we're using xinetd
+[ -f /etc/init/tftpd-hpa.conf ] && echo "manual" > /etc/init/tftpd-hpa.override
+
+# Disable the tftpd-hpa SysV script for the same reason
+[ -f /etc/init.d/tftpd-hpa ] && update-rc.d -f tftpd-hpa disable
+
+cat > /etc/xinetd.d/tftp << EOF
+service tftp
+{
+    protocol        = udp
+    port            = 69
+    socket_type     = dgram
+    wait            = yes
+    user            = root
+    server          = /usr/sbin/in.tftpd
+    server_args     = --map-file /tftpboot/map-file /tftpboot
+    disable         = no
+    flags           = IPv4
+}
+EOF
+
+# Adds support for tftp requests that don't include the directory name.
+echo 'r ^([^/]) /tftpboot/\1' > /tftpboot/map-file
+
+# ensure tftpboot dir and all files in it are owned by ironic user
+chown ironic:ironic -R /tftpboot

json-files/centos-7-undercloud-packages.json

@@ -10,7 +10,6 @@
       "undercloud-post-config",
       "enable-packages-install",
       "element-manifest",
-      "ironic-conductor",
       "ipxe",
       "os-net-config",
       "puppet-stack-config"

json-files/rhel-7-undercloud-packages.json

@@ -10,7 +10,6 @@
       "undercloud-post-config",
       "enable-packages-install",
       "element-manifest",
-      "ironic-conductor",
       "ipxe",
       "os-net-config",
       "puppet-stack-config"