Migrate label functions to submit requirements

project.config

diff --git a/project.config b/project.config
index b8704da..cd05e1c 100644
--- a/project.config
+++ b/project.config
@@ -51,7 +51,7 @@
 	createTag = group Project Owners
 	createTag = group mdb/gn-gerrit-owners
 [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
@@ -62,3 +62,6 @@
 [capability]
 	administrateServer = group mdb/gn-gerrit-owners
 	viewAllAccounts = group gn-scoped
+[submit-requirement "Code-Review"]
+	submittableIf = label:Code-Review=MAX AND -label:Code-Review=MIN
+	canOverrideInChildProjects = true