Fix server side autotests installing to the wrong directory.

global_config.ini

 [AUTOTEST_WEB]
 host: localhost
 database: autotest_web
 db_type: mysql
 user: autotest
 password: please_set_this_password
 job_timeout_default: 72
 job_max_runtime_hrs_default: 72
 parse_failed_repair_default: 0
 # Only set this if your server is not 'http://[SERVER] hostname/afe/'
@@ skipping 81 matching lines @@
 ssh_engine: raw_ssh
 # Set to True to take advantage of OpenSSH-based connection sharing. This would
 # have bigger performance impact when ssh_engine is 'raw_ssh'.
 enable_master_ssh: True
 # Autotest server operators *really should* set this to True, specially if
 # using ssh_engine 'paramiko'.
 require_atfork_module: False
 # Set to False to disable ssh-agent usage with paramiko
 use_sshagent_with_paramiko: True
 client_autodir_paths: /home/autotest
+# Real Autotest installation directory. client_autodir_paths above are mounts. A
+# many-to-one mapping between the two is used right now, but there's no reason
+# it couldn't be enhanced to a one-to-one mapping.
+client_autodir_real_path: /mnt/stateful_partition/autotest
 enable_server_prebuild: True
 
 [PACKAGES]
 # in days
 custom_max_age: 1
 # in Gigabyte
 minimum_free_space: 1
 serve_packages_from_autoserv: True
 # this entry is just a place holder in order to keep util/packager.py happy
 # The actual value will be provided through command line option --repository
 # from inside chromeos-base/autotest ebuild file
 upload_location: UNUSED