Add variables for mod_xsendfile and mod_fastcgi

apache/map.jinja

@@ -35,6 +35,8 @@
         'mod_perl2': 'libapache2-mod-perl2',
         'mod_fcgid': 'libapache2-mod-fcgid',
         'mod_pagespeed_source': 'https://dl-ssl.google.com/dl/linux/direct/mod-pagespeed-stable_current_amd64.deb',
+        'mod_xsendfile': 'libapache2-mod-xsendfile',
+        'mod_fastcgi': 'libapache2-mod-fastcgi',
 
         'vhostdir': '/etc/apache2/sites-available',
         'confdir': '/etc/apache2/conf.d',