heketi: fix deployment logic that was broken by the ansible 3.4 upgrade (#8118)

contrib/network-storage/heketi/roles/provision/tasks/secret.yml

@@ -5,7 +5,7 @@
   changed_when: false
 
 - name: "Kubernetes Apps | Deploy cluster role binding."
-  when: "clusterrolebinding_state.stdout | length > 0"
+  when: "clusterrolebinding_state.stdout | length == 0"
   command: "{{ bin_dir }}/kubectl create clusterrolebinding heketi-gluster-admin --clusterrole=edit --serviceaccount=default:heketi-service-account"
 
 - name: Get clusterrolebindings again
@@ -31,7 +31,7 @@
     mode: 0644
 
 - name: "Deploy Heketi config secret"
-  when: "secret_state.stdout | length > 0"
+  when: "secret_state.stdout | length == 0"
   command: "{{ bin_dir }}/kubectl create secret generic heketi-config-secret --from-file={{ kube_config_dir }}/heketi.json"
 
 - name: Get the heketi-config-secret secret again
@@ -41,5 +41,5 @@
 
 - name: Make sure the heketi-config-secret secret exists now
   assert:
-    that: "secret_state.stdout != \"\""
+    that: "secret_state.stdout | length > 0"
     msg: "Heketi config secret is not present."