Disable Apache port 80

Currently, Apache ports.conf file is not being configured by this
charm. This patch changes the ports.conf default file with another one
that does not open port 80 on SSL environments.

Change-Id: I35ba6bb31af6d795d02d90d0d127ac5c6c129d0f
Closes-bug: #1845665

hooks/keystone_utils.py

@@ -207,6 +207,7 @@ else:
 
 
 HAPROXY_CONF = '/etc/haproxy/haproxy.cfg'
+APACHE_PORTS_CONF = '/etc/apache2/ports.conf'
 APACHE_CONF = '/etc/apache2/sites-available/openstack_https_frontend'
 APACHE_24_CONF = '/etc/apache2/sites-available/openstack_https_frontend.conf'
 MEMCACHED_CONF = '/etc/memcached.conf'
@@ -295,6 +296,10 @@ BASE_RESOURCE_MAP = OrderedDict([
                      context.SyslogContext()],
         'services': [],
     }),
+    (APACHE_PORTS_CONF, {
+        'contexts': [],
+        'services': ['apache2'],
+    }),
 ])
 
 valid_services = {

templates/ports.conf

@@ -0,0 +1,4 @@
+# File written by Juju: don't open default ports on SSL environments (see LP 1845665).
+<IfModule !ssl_module>
+    Listen 80
+</IfModule>