Fix syntax for set_fact ansible task.

Error in ansible task causes upgrade job to fail:
tripleo-ci-centos-7-scenario000-multinode-oooq-container-upgrades

Closes-Bug: 1778455

Change-Id: I4040c7cc004e8ee81355bbae6ccc1a0a4dfd0822

docker/services/pacemaker/haproxy.yaml

@@ -402,7 +402,8 @@ outputs:
               ignore_errors: true
               register: haproxy_pcs_res_result
             - name: Set fact haproxy_pcs_res
-              set_fact: "{{haproxy_pcs_res_result|succeeded}}"
+              set_fact:
+                haproxy_pcs_res: "{{haproxy_pcs_res_result|succeeded}}"
         - name: haproxy baremetal to container upgrade tasks
           when:
             - step|int == 1