update example apache confs

examples/apache/photos.example.com.conf.example

@@ -0,0 +1,16 @@
+<VirtualHost *:80>
+
+    ServerName photos.example.com
+    DocumentRoot /var/lib/<app_user>/photos
+    ErrorLog ${APACHE_LOG_DIR}/error.log
+    CustomLog ${APACHE_LOG_DIR}/access.log combined
+
+    <Directory "/var/lib/<app_user>/photos">
+      ExpiresActive on
+      ExpiresDefault "access plus 1 year"
+      Header set Cache-Control max-age=31557600
+      Options Indexes
+      Require all granted
+    </Directory>
+
+</VirtualHost>