update defaults and examples w/ iscsi plugin

inventory/byo/hosts.aep.example

@@ -142,7 +142,7 @@ openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true',
 
 # default storage plugin dependencies to install, by default the ceph and
 # glusterfs plugin dependencies will be installed, if available.
-#osn_storage_plugin_deps=['ceph','glusterfs']
+#osn_storage_plugin_deps=['ceph','glusterfs','iscsi']
 
 # default selectors for router and registry services
 # openshift_router_selector='region=infra'

inventory/byo/hosts.origin.example

@@ -147,7 +147,7 @@ openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true',
 
 # default storage plugin dependencies to install, by default the ceph and
 # glusterfs plugin dependencies will be installed, if available.
-#osn_storage_plugin_deps=['ceph','glusterfs']
+#osn_storage_plugin_deps=['ceph','glusterfs','iscsi']
 
 # default selectors for router and registry services
 # openshift_router_selector='region=infra'

roles/openshift_facts/library/openshift_facts.py

@@ -712,7 +712,7 @@ def set_deployment_facts_if_unset(facts):
         deployment_type = facts['common']['deployment_type']
         if 'storage_plugin_deps' not in facts['node']:
             if deployment_type in ['openshift-enterprise', 'atomic-enterprise']:
-                facts['node']['storage_plugin_deps'] = ['ceph', 'glusterfs']
+                facts['node']['storage_plugin_deps'] = ['ceph', 'glusterfs', 'iscsi']
             else:
                 facts['node']['storage_plugin_deps'] = []