Load mod-python in the setup_dev_autotest script.

Calling a2enmod python twice won't disrupt anything but
not calling it at all will not load mod_python, which is
needed to start apache.

TEST=Manually made the call and got it working.
BUG=None

Change-Id: I7caa5d85ffbb598d943612e6b69dfe60f410a55c
Reviewed-on: https://gerrit.chromium.org/gerrit/41147
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Commit-Queue: Prashanth Balasubramanian <beeps@chromium.org>
Tested-by: Prashanth Balasubramanian <beeps@chromium.org>
diff --git a/site_utils/setup_dev_autotest.sh b/site_utils/setup_dev_autotest.sh
index 2e5ea3f..ff517a0 100755
--- a/site_utils/setup_dev_autotest.sh
+++ b/site_utils/setup_dev_autotest.sh
@@ -190,6 +190,8 @@
 sudo a2ensite autotest-server
 # Enable rewrite module
 sudo a2enmod rewrite
+# Enable mod-python
+sudo a2enmod python
 # Setup permissions so that Apache web user can read the proper files.
 chmod -R o+r "${AT_DIR}"
 find "${AT_DIR}"/ -type d | xargs chmod o+x