Add configurations and inventory for new Iris himem R860 nodes

etc/kayobe/environments/production/inventory/overcloud

...ory/group_vars/compute-iris-r860-himem-20250130/nova_cell

...ventory/group_vars/compute-iris-r860-himem-20250130/sriov

...entory/group_vars/compute-iris-r860-himem-20250130/tuning

etc/kayobe/environments/production/network-allocation.yml

etc/kayobe/inventory/custom

...y/group_vars/compute-iris-r860-himem-20250130/compute.yml

...tory/group_vars/compute-iris-r860-himem-20250130/firewall

...y/group_vars/compute-iris-r860-himem-20250130/firewallgen

...inventory/group_vars/compute-iris-r860-himem-20250130/lvm

...ventory/group_vars/compute-iris-r860-himem-20250130/mdadm

..._vars/compute-iris-r860-himem-20250130/network-interfaces

...ventory/group_vars/compute-iris-r860-himem-20250130/sriov

...entory/group_vars/compute-iris-r860-himem-20250130/tuning

etc/kayobe/kolla.yml

etc/kayobe/kolla/config/nova/nova-compute.conf