Make sure bots can submit gerrit CLs

Change-Id: Ic9ebc8089defaffeaf1d9fa682846442a0230a3d
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/460380
Reviewed-by: Alexander Thomas <[email protected]>

Author: iinozemtsev

tools/FAKE_COMMITS

@@ -32,6 +32,7 @@ Trigger builds to check recipe changes
 Trigger builds to test builder configuration change
 Trigger mac builds now that the snoopy service is installed
 Trigger bots
+Submit Gerrit CL with a bot
 
 Analyzer branch commits:
 Force build on new analyzer-branch linux build with new workflow