Add submit requirement for "Code-Review" in All-Projects

Change-Id: I130e9f57dc4c914fd3e67c399ddee13d646c5387
Reviewed-on: https://boringssl-review.googlesource.com/c/All-Projects/+/51785
Reviewed-by: Gavin Mak <gavinmak@google.com>

project.config

diff --git a/project.config b/project.config
index 2dd4674..f18ef69 100644
--- a/project.config
+++ b/project.config
@@ -191,3 +191,8 @@
 	rejectSymlink = false
 	rejectWindowsLineEndings = false
 	skipViaPushOption = true
+[submit-requirement "Code-Review"]
+        description = At least one maximum vote for label 'Code-Review' is required
+        submittableIf = label:Code-Review=MAX,user=non_uploader AND -label:Code-Review=MIN
+        overrideIf = label:Bot-Commit=+1
+        canOverrideInChildProjects = true