[autotest] Grant chromeos-testing access to cautotest

gsso grant access based on cdb group. Since all the vendors
are on group chromeos-testing. Grant this group should
give our vendors access.

TEST=None
BUG=chromium:548029

Change-Id: Icf34c47484852469706be333aa165f2795b3a6be
Reviewed-on: https://chromium-review.googlesource.com/313647
Commit-Ready: Fang Deng <fdeng@chromium.org>
Tested-by: Fang Deng <fdeng@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
diff --git a/apache/conf/site-sso-directives b/apache/conf/site-sso-directives
index e4e5be8..a7f6da9 100755
--- a/apache/conf/site-sso-directives
+++ b/apache/conf/site-sso-directives
@@ -7,7 +7,7 @@
     TicketSigningKey /etc/apache2/google_sso/login.crt
     ServiceRoot /
     LoginServer https://login.corp.google.com
-    Require group eng eng-intern nonconf
+    Require group eng eng-intern chromeos-testing nonconf
     Order allow,deny
     allow from all
 </LocationMatch>