Use pxelinux.0 from distribution compose rather than pxelinux provided by Beaker

[StykMartin]

At this moment it seems that default pxelinux.0 (provided by Beaker) is used for x86_64 machines.

It would be better if you will take it from compose and follow the same procedure as you do with PPC64LE.

dci-rhel-agent/dci-rhel-agent/install.yml

Lines 6 to 16 in c636e24

	- name: Copy RHEL8 ppc64le boot files to tftproot when provisioning a ppc64le machine
	copy:
	src: "{{ local_repo }}/{{ topic }}/compose/BaseOS/ppc64le/os/boot/grub/powerpc-ieee1275"
	dest: "/var/lib/tftpboot/boot/grub2/{{ fqdn }}"
	when: hostvars.localhost.system_arch == "ppc64le" and topic.startswith("RHEL-8")
	- name: Copy RHEL7 ppc64le boot files to tftproot when provisioning a ppc64le machine
	copy:
	src: "{{ local_repo }}/{{ topic }}/compose/Server/ppc64le/os/boot/grub/powerpc-ieee1275"
	dest: "/var/lib/tftpboot/boot/grub2/{{ fqdn }}"
	when: hostvars.localhost.system_arch == "ppc64le" and topic.startswith("RHEL-7")

dci-rhel-agent/dci-rhel-agent/templates/job.xml.j2

Lines 4 to 5 in c636e24

	{% if hostvars.localhost.system_arch == 'ppc64le' %}
	<recipe ks_meta="selinux=--permissive autopart_type=plain harness='restraint beakerlib'" whiteboard="" kernel_options="netbootloader=boot/grub2/{{ fqdn }}/powerpc-ieee1275/core.elf">

In case we would like to get BIOS mode done we need to take pxelinux.0 from syslinux package, because compose has GRUB(2) in /EFI/BOOT.

Following steps has to be done:

• Fetch syslinux from {{ local_repo }}/{{ topic }}/compose/Server/x86_64/os/Packages/'
• Unpack RPM with cpio
• Store pxelinux.0 to proper structure in /var/lib/tftpboot
• Move PXE config generated by Beaker
• Update job
• Profit ? 🥳