Add Ceph OSD cpuset tuning options

Allows an administrator to set CPU pinning with the cpuset tool for Ceph
OSDs, in situations where CPU contention with VMs or other system tasks
may be negatively affecting OSD performance. This is optional, advanced
tuning and is disabled by default.

roles/pvc/templates/ceph/ceph-osd-cpuset.service.j2

@@ -0,0 +1,13 @@
+# PVC Ceph OSD cpuset service unit
+# {{ ansible_managed }}
+{% set cset_host = pvc_shield_osds_cset | selectattr('hostname', 'equalto', inventory_hostname) %}
+[Unit]
+Description = Ceph OSD cpuset shield creation
+Before = ceph-osd@.service libvirtd.service
+
+[Service]
+Type = oneshot
+ExecStart = /usr/local/sbin/ceph-osd-cpuset
+
+[Install]
+WantedBy = ceph.target