[ATMOSPHERE-345] fix: Ensure iscsid starts (#1874)

This make sure initiatorname gets properly configured And avoid GenerateName=yes that failed Nova on attach cinder volume.
diff --git a/playbooks/openstack.yml b/playbooks/openstack.yml
index a69a5c3..e82693a 100644
--- a/playbooks/openstack.yml
+++ b/playbooks/openstack.yml
@@ -75,6 +75,10 @@
       tags:
         - multipathd
 
+    - role: iscsi
+      tags:
+        - iscsi
+
 - name: Deploy Open vSwitch
   hosts: controllers:computes
   become: true