correct duplicated constraint names

fr.centralesupelec.edf.riseclipse.iec61850.scl.ocl/RequiredAttributes/SDO.ocl

@@ -32,7 +32,7 @@ context SDO
         self.name <> null
 
     -- The name attribute shall be valid
-    inv SDO_name_required
+    inv SDO_name_valid
         ( 'name attribute shall be valid in SDO (line ' + self.lineNumber.toString() + ')). '
           + 'Current value is ' + self.name.toString()
         )

fr.centralesupelec.edf.riseclipse.iec61850.scl.ocl/RequiredAttributes/SampledValueControl.ocl

@@ -61,7 +61,7 @@ context SampledValueControl
 
     -- The nofASDU attribute shall be an unsignedInt
     -- Note: unsignedInt are EInt in the metaModel
-    inv SampledValueControl_nofASDU_required
+    inv SampledValueControl_nofASDU_valid
         ( 'nofASDU attribute shall be present in SampledValueControl (line ' + self.lineNumber.toString() + '). '
           + 'Current value is ' + self.nofASDU.toString()
         )