Added open-iscsi to default removals
Added open-iscsi to default removals

The bootstrapping process should remove the open-iscsi package.
Otherwise the iscsid startup will failed.

Change-Id: I0c31c84f4486bd44c467fbaf7a26563e4dbc5ccf

dardelean/kolla-ansible,dardelean/kolla-ansible,dardelean/kolla-ansible