Master node's grub-legacy install code in kickstart file failed to execute and is unnecessary

[Wei Hui]

After master node install:
[root@fuel ~]# pwd
/root
[root@fuel ~]# ls
anaconda.cmdline.vars anaconda-parse-cmdline.log anaconda-post-configure-autologon.log anaconda-post-configure-sysconfig.log anaconda-post-partition.log
anaconda-ks.cfg anaconda-post-before-chroot.log anaconda-post-configure-repos.log anaconda-post-interface-settings.log
[root@fuel ~]# cat anaconda-post-partition.log
chroot: failed to run command '/sbin/grub': No such file or directory
[root@fuel ~]#

GRUB legacy does not support GPT disks, so it can not work on disks which are >4T.
Since centos 7 and ubuntu after 9.09 have switched to grub2 which support GPT disk partition, and anaconda install grub2 automatically.

We can safely delete those code.

######################################################################
# Anaconda can not install grub 0.97 on disks which are >4T.
# The reason is that grub does not support such large geometries
# and it simply thinks that the cylinder number has negative value.
# Here we just set geometry manually so that grub thinks that disk
# size is equal to 1G.
# 130 cylinders * (16065 * 512 = 8225280 bytes) = 1G
echo "%post --nochroot --log=/mnt/sysimage/root/anaconda-post-partition.log" > /tmp/post_partition.ks
echo "echo \"device (hd0) /dev/${tgtdrive}\" >> /tmp/grub.script" >> /tmp/post_partition.ks
echo "echo \"geometry (hd0) 130 255 63\" >> /tmp/grub.script" >> /tmp/post_partition.ks
echo "echo \"root (hd0,2)\" >> /tmp/grub.script" >> /tmp/post_partition.ks
echo "echo \"install /grub/stage1 (hd0) /grub/stage2 p /grub/grub.conf\" >> /tmp/grub.script" >> /tmp/post_partition.ks
echo "echo quit >> /tmp/grub.script" >> /tmp/post_partition.ks
echo "cat /tmp/grub.script | chroot /mnt/sysimage /sbin/grub --no-floppy --batch" >> /tmp/post_partition.ks
echo "%end" >> /tmp/post_partition.ks
######################################################################################

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/387406

[OpenStack Infra (hudson-openstack)]

Change abandoned by Wei Hui (<email address hidden>) on branch: master
Review: https://review.opendev.org/387406