update: move a set_fact

ceph-facts roles makes decisions based on the fact `rolling_update` so
it must be called before we run this role.

Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2014304

Signed-off-by: Guillaume Abrioux <gabrioux@redhat.com>
(cherry picked from commit bf36592)

infrastructure-playbooks/rolling_update.yml

@@ -82,6 +82,10 @@
       run_once: true
       when: delegate_facts_host | bool
 
+    - name: set_fact rolling_update
+      set_fact:
+        rolling_update: true
+
     - import_role:
         name: ceph-facts
 
@@ -105,9 +109,6 @@
         - (containerized_deployment | bool) or (dashboard_enabled | bool)
         - ceph_docker_registry_auth | bool
 
-    - name: set_fact rolling_update
-      set_fact:
-        rolling_update: true
 
 - name: upgrade ceph mon cluster
   tags: mons