roles/apache: Do not start Apache

If another role that depends on the *apache* role accidentally creates
an invalid configuration, it will be impossible to correct it by
subsequent invocations of its playbook. This is because the *apache*
role always tries to start the service, which will fail if the
configuration is invalid, thus aborting the playbook. With this early
abort, there is no way for later tasks to correct the error.

Playbooks that include the *apache* role should have a task that is
executed after all the roles have been applied to ensure the service is
running.

roles/apache/files/.gitignore

@@ -3,3 +3,4 @@
 *.key
 *.pem
 *.keytab
+*.cnf

roles/apache/tasks/main.yml

@@ -87,12 +87,6 @@
   with_items: '{{ web_ports }}'
   notify: save firewalld configuration
 
-- meta: flush_handlers
-- name: ensure httpd service is running
-  service:
-    name=httpd
-    state=started
-
 - name: ensure old apache logs are rotated
   template:
     src=httpd.logrotate.j2