Prevents leapp upgrade from RHEL 7 to RHEL 8

[dsedgmen]

This causes the leapp upgrade to fail because it is unable to install systemd, do we need to have this set to immutable?
error: unpacking of archive failed on file /usr/lib/systemd/resolv.conf: cpio: rename failed - Operation not permitted
error: systemd-239-31.el8_2.2.x86_64: install failed

infrared/infrared/common/roles/tls-everywhere/tasks/set_undercloud_dns.yml

Lines 28 to 35 in 1e34d13

	- name: Make systemd resolv.conf immutable
	become: yes
	file:
	path: /usr/lib/systemd/resolv.conf
	owner: root
	group: root
	mode: '0644'
	attributes: +i