Added discriminator checks and cleaned up some more patterns

Still quite early in the pattern finding process, needs another sweep to cache and fetch more pre-calculated change counts.

Signed-off-by: Dave Shanley <dave@quobix.com>

datamodel/low/v3/constants.go

@@ -51,4 +51,5 @@ const (
 	PrefixLabel            = "prefix"
 	AttributeLabel         = "attribute"
 	WrappedLabel           = "wrapped"
+	PropertyNameLabel      = "propertyName"
 )