Fix SELinux facts (#337)

Author: alessfg

CHANGELOG.md

@@ -10,6 +10,7 @@ ENHANCEMENTS:
 BUG FIXES:
 
 *   Prevent TravisCI from trying to build (and failing) NGINX Plus images on external PRs.
+*   Fix naming for SELinux facts dict.
 
 ## 0.17.2 (September 24, 2020)
 

tasks/prerequisites/prerequisites.yml

@@ -11,8 +11,9 @@
 
     - name: Configure SELinux
       include_tasks: "{{ role_path }}/tasks/prerequisites/setup-selinux.yml"
-      when: ansible_facts['selinux.mode'] is defined
+      when: ansible_facts['selinux']['mode'] is defined
   when:
     - nginx_selinux | bool
+    - "'selinux' in ansible_facts"
     - ansible_facts['os_family'] in ['RedHat', 'Suse']
     - ansible_facts['distribution'] not in ['Amazon', 'OracleLinux']

tasks/prerequisites/setup-selinux.yml

@@ -22,7 +22,7 @@
     state: permissive
     policy: targeted
   changed_when: false
-  when: ansible_facts['selinux.mode'] == "enforcing"
+  when: ansible_facts['selinux']['mode'] == "enforcing"
 
 - name: Allow SELinux HTTP network connections
   seboolean:
@@ -99,4 +99,4 @@
   changed_when: false
   when:
     - nginx_selinux_enforcing | bool
-    - ansible_facts['selinux.mode'] == "permissive"
+    - ansible_facts['selinux']['mode'] == "permissive"