Optimize owncloud settings (APCu, HSTS).

roles/owncloud/tasks/main.yml

@@ -3,6 +3,7 @@
 - name: Install packages
   apt: name={{ item }} state=present
   with_items:
+  - php5-apcu
   - php5-curl
   - php5-fpm
   - php5-gd

roles/owncloud/templates/vhost.j2

@@ -24,7 +24,7 @@ server {
 	ssl_certificate /etc/nginx/ssl/{{ owncloud_domain }}.crt;
 
 	# Add headers to serve security related headers
-	#add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;";
+	add_header Strict-Transport-Security "max-age=15768000; includeSubDomains; preload;";
 	add_header X-Content-Type-Options nosniff;
 	add_header X-Frame-Options "SAMEORIGIN";
 	add_header X-XSS-Protection "1; mode=block";