Revert "Temporarily remove mac_rel from CQ."

This reverts commit c3447350552f3b08526acd5ac59be61a0eec2727.

Reason for revert: Bots are now fixed.

Original change's description:
> Temporarily remove mac_rel from CQ.
>
> Bug: webrtc:13275
> Change-Id: Ib66ad9755314a50c04d17bb85fbea62adc4d8ada
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/235062
> Reviewed-by: Markus Handell <handellm@webrtc.org>
> Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: webrtc:13275
Change-Id: I09e83cebd395bc54c7563ea6d0ec6e6ddd395fa0
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/235361
Reviewed-by: Artem Titov <titovartem@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
diff --git a/commit-queue.cfg b/commit-queue.cfg
index 897a5a9..5c81664 100644
--- a/commit-queue.cfg
+++ b/commit-queue.cfg
@@ -146,6 +146,12 @@
         name: "webrtc/try/mac_compile_dbg"
       }
       builders {
+        name: "webrtc/try/mac_dbg"
+      }
+      builders {
+        name: "webrtc/try/mac_rel"
+      }
+      builders {
         name: "webrtc/try/presubmit"
         disable_reuse: true
       }
@@ -298,6 +304,12 @@
         name: "webrtc/try/mac_compile_dbg"
       }
       builders {
+        name: "webrtc/try/mac_dbg"
+      }
+      builders {
+        name: "webrtc/try/mac_rel"
+      }
+      builders {
         name: "webrtc/try/presubmit"
         disable_reuse: true
       }