Added apache2 service notification on ssl cert change

Added notification to service apache2 when some of the ssl
cert files changes, to be able to reload them.

Change-Id: Iab89ce159d7874587fd006c765f042a41a20505f

manifests/init.pp

@@ -217,6 +217,7 @@ class openstackid (
       group   => 'root',
       mode    => '0640',
       content => $ssl_cert_file_contents,
+      notify  => Service['apache2'],
       before  => Httpd::Vhost[$vhost_name],
     }
   }
@@ -227,6 +228,7 @@ class openstackid (
       group   => 'root',
       mode    => '0640',
       content => $ssl_key_file_contents,
+      notify  => Service['apache2'],
       before  => Httpd::Vhost[$vhost_name],
     }
   }
@@ -237,6 +239,7 @@ class openstackid (
       group   => 'root',
       mode    => '0640',
       content => $ssl_chain_file_contents,
+      notify  => Service['apache2'],
       before  => Httpd::Vhost[$vhost_name],
     }
   }