Use infra committer list from chrome-infra-auth

R=phajdan.jr@chromium.org
BUG=511311

Review URL: https://codereview.chromium.org/1312963003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@296454 0039d316-1c4b-4281-b951-d872f2087c98

infra/config/cq.cfg

@@ -24,7 +24,7 @@ rietveld {
 
 verifiers {
   reviewer_lgtm {
-    committer_list: "chromium"
+    committer_list: "project-infra-committers"
   }
 
   try_job {