Fixed setenforce issue in k8s/mesos/openshift systems

command "setenforce 0" will be executed only if ansible_selinux.status
== 'enabled' in k8s/mesos/openshift systems

Change-Id: I16af4dcb553bff06b9e81208c40faf475eb4bddb
Closes-bug: #1689900

playbooks/roles/common/tasks/main.yml

@@ -11,7 +11,7 @@
 
 - name: Disable selinux for redhat systems
   command: setenforce 0
-  when: ansible_os_family == 'RedHat'
+  when: cloud_orchestrator != 'openstack' and ansible_os_family == 'RedHat' and ansible_selinux.status == 'enabled'
 
 - include: facts.yml
   tags: always