rolling_update: Update systemd unit regex for nvme

The systemd unit regex doesn't handle nvme devices (/dev/nvmeXn1).

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1687828

Signed-off-by: Dimitri Savineau <dsavinea@redhat.com>
(cherry picked from commit c8442f3705)

infrastructure-playbooks/rolling_update.yml

@@ -347,7 +347,7 @@
       when: not containerized_deployment
 
     - name: get osd unit names - container
-      shell: systemctl list-units | grep -E "loaded * active" | grep -oE "ceph-osd@([0-9]{1,}|[a-z]+).service"
+      shell: systemctl list-units | grep -E "loaded * active" | grep -oE "ceph-osd@([a-z0-9]+).service"
       register: osd_names
       changed_when: false
       when: containerized_deployment