Word ordering is hard

Signed-off-by: Patrick Uiterwijk <patrick@puiterwijk.org>

roles/httpd/reverseproxy/tasks/main.yml

@@ -9,7 +9,7 @@
 - name: Set OpenShift information if not preconfigured
   set_fact:
     balancer_members: "{{ openshift_nodes }}"
-  when: 'targettype == "openshift" and balancer_members not defined'
+  when: 'targettype == "openshift" and not balancer_members is defined'
 
 - name: Copy in ProxyPassReverse for {{destname}} ({{website}}{{remotepath}})
   template: >