setup-openstack-iscsi-multipath-storpool: Restart multipath after config update

Change-Id: Icfa1095cd3810e09c6978c3193d81d82a07d7a84
diff --git a/playbooks/setup-openstack-iscsi-multipath-storpool/pre.yaml b/playbooks/setup-openstack-iscsi-multipath-storpool/pre.yaml
index 2c01950..65aa6f8 100644
--- a/playbooks/setup-openstack-iscsi-multipath-storpool/pre.yaml
+++ b/playbooks/setup-openstack-iscsi-multipath-storpool/pre.yaml
@@ -469,3 +469,8 @@
         owner: root
         group: root
         mode: '0644'
+
+    - name: Restart multipathd
+      become: true
+      ansible.builtin.command:
+        argv: [ "systemctl", "restart", "multipathd" ]