changed selinux installed/enabled detection

Author: aknot242

tasks/prerequisites/setup-centos.yml

@@ -8,4 +8,7 @@
 - name: Disable SELinux
   selinux:
     state: disabled
-  when: "'selinux' in ansible_facts.packages"
+  when:
+    - ansible_selinux is defined
+    - ansible_selinux != false
+    - ansible_selinux.status == 'enabled'