Avoid the validation failure when there are non DPDK instances. The playbook fails when there are instances not containing numatune, vcpupin or hugepages settings on the domain xml content.
Closes-Bug: #1988211
Signed-off-by: Juan Pablo Martí <jmarti@redhat.com>
Change-Id: I243f7781cd72827c0a1f9623a7e994e63d1561b0
(cherry picked from commit 477aaa9877)