Update healthcheck boolean

Author: arnaudfroidmont

playbooks/roles/slurm/tasks/common.yml

@@ -210,4 +210,5 @@
     dest: "{{ slurm_conf_path }}/prolog.d/healthchecks.sh"
     owner: root
     group: root
-    mode: '0755'
+    mode: '0755'
+  when: healthchecks|bool