Migrate label functions to submit requirements

project.config

diff --git a/project.config b/project.config
index 89aa08b..bfb88ed 100644
--- a/project.config
+++ b/project.config
@@ -64,7 +64,7 @@
 	createTag = group Project Owners
 	createTag = group mdb/aiyprojects-gerrit-owner
 [label "Code-Review"]
-	function = MaxWithBlock
+	function = NoBlock
 	defaultValue = 0
 	value = -2 This shall not be merged
 	value = -1 I would prefer this is not merged as is
@@ -75,3 +75,6 @@
 [capability]
 	administrateServer = group mdb/aiyprojects-gerrit-owner
 	streamEvents = group Jenkins-Build-Robot
+[submit-requirement "Code-Review"]
+	submittableIf = label:Code-Review=MAX AND -label:Code-Review=MIN
+	canOverrideInChildProjects = true