add basic selinux tools for all rhel based hosts

roles/base/tasks/RedHat.yml

@@ -35,4 +35,9 @@
 
 - name: install os specific roles
   include_role:
-    name: iptables
+    name: "{{ role }}"
+  with_items:
+    - iptables
+    - selinux
+  loop_control:
+    loop_var: role

roles/selinux/tasks/main.yml

@@ -0,0 +1,5 @@
+---
+- name: install mandatory selinux packages
+  package:
+    name: policycoreutils-python
+    state: installed