igw: move gateway_ip_list check to validate role

Signed-off-by: Mike Christie <mchristi@redhat.com>
(cherry picked from commit d89d3e7cd6)

roles/ceph-iscsi-gw/tasks/common.yml

@@ -1,9 +1,4 @@
 ---
-- name: make sure gateway_ip_list is configured
-  fail:
-    msg: "you must set a list of IPs (comma separated) for gateway_ip_list"
-  when: gateway_ip_list == "0.0.0.0"
-
 - name: copy admin key
   copy:
     src: "{{ fetch_directory }}/{{ fsid }}/etc/ceph/{{ cluster }}.client.admin.keyring"

roles/ceph-validate/tasks/check_iscsi.yml

@@ -1,4 +1,9 @@
 ---
+- name: make sure gateway_ip_list is configured
+  fail:
+    msg: "you must set a list of IPs (comma separated) for gateway_ip_list"
+  when: "gateway_ip_list | default('0.0.0.0') == '0.0.0.0'"
+
 - name: fail if unsupported chap configuration
   fail:
     msg: "Mixing clients with CHAP enabled and disabled is not supported."