Add CQ config specific to infra/config branch

Otherwise it tries to run normal WebRTC tryjobs for it
(since https://chrome-internal-review.googlesource.com/783342)

No-Try: True
Change-Id: I0dc67efd7b0661662e61d1421bd87b340611b435
Reviewed-on: https://webrtc-review.googlesource.com/c/120045
Reviewed-by: Artem Titarenko <artit@webrtc.org>
Commit-Queue: Oleh Prypin <oprypin@webrtc.org>
diff --git a/commit-queue.cfg b/commit-queue.cfg
index 6c55546..b2c6876 100644
--- a/commit-queue.cfg
+++ b/commit-queue.cfg
@@ -13,6 +13,33 @@
     url: "https://webrtc-review.googlesource.com"
     projects {
       name: "src"
+      ref_regexp: "refs/heads/infra/config"
+    }
+  }
+  verifiers {
+    gerrit_cq_ability {
+      committer_list: "project-webrtc-admins"
+      dry_run_access_list: "project-webrtc-tryjob-access"
+    }
+    tryjob {
+      builders {
+        name: "webrtc/try/presubmit"
+      }
+      retry_config {
+        single_quota: 1
+        global_quota: 2
+        failure_weight: 1
+        transient_failure_weight: 1
+        timeout_weight: 2
+      }
+    }
+  }
+}
+config_groups {
+  gerrit {
+    url: "https://webrtc-review.googlesource.com"
+    projects {
+      name: "src"
       ref_regexp: "refs/heads/.+"
     }
   }