Gather facts for CSI (#1602)

The multipathd role needs to gather facts.
diff --git a/playbooks/csi.yml b/playbooks/csi.yml
index 0b86a74..38c5eee 100644
--- a/playbooks/csi.yml
+++ b/playbooks/csi.yml
@@ -13,7 +13,6 @@
 # under the License.
 
 - hosts: controllers
-  gather_facts: false
   become: true
   roles:
     - role: csi