Make iscsi config.yml consistent with start.yml

As part of non-lvm iscsi bugfix, changes were introduced
to iscsi's start.yml. Same changes/conditions should be
reflected to config.yml so container configuration is deployed on
the same nodes as containers are started.

TrivialFix

Change-Id: Ib988df2d36983d63a3aff4226224dc5fc6064221

ansible/roles/iscsi/tasks/config.yml

@@ -23,7 +23,9 @@
     path: "{{ node_config_directory }}/{{ item }}"
     state: "directory"
     recurse: yes
-  when: inventory_hostname in groups['tgtd']
+  when:
+    - inventory_hostname in groups['tgtd']
+    - enable_cinder_backend_lvm | bool
   with_items:
     - "tgtd"
 
@@ -31,6 +33,8 @@
   template:
     src: "{{ item }}.json.j2"
     dest: "{{ node_config_directory }}/{{ item }}/config.json"
-  when: inventory_hostname in groups['tgtd']
+  when:
+    - inventory_hostname in groups['tgtd']
+    - enable_cinder_backend_lvm | bool
   with_items:
     - "tgtd"