handle new naming strategy for Central Build stage name (#5171)

* config helper rename

* rename in name provider 
---------

Co-authored-by: maxcask <[email protected]>

Author: maxcask

src/com/sap/piper/ConfigurationHelper.groovy

@@ -10,6 +10,9 @@ class ConfigurationHelper implements Serializable {
     }
 
     ConfigurationHelper loadStepDefaults(Map compatibleParameters = [:], String stageName = step.env.STAGE_NAME) {
+        if (stageName == 'Central Build'){
+            stageName = 'Build'
+        }
         DefaultValueCache.prepare(step)
         this.config = ConfigurationLoader.defaultGeneralConfiguration()
         mixin(ConfigurationLoader.defaultGeneralConfiguration(), null, compatibleParameters)

src/com/sap/piper/StageNameProvider.groovy

@@ -3,21 +3,34 @@ package com.sap.piper
 @Singleton
 class StageNameProvider implements Serializable {
     static final long serialVersionUID = 1L
+    static final String CENTRAL_BUILD = "Central Build";
+    static final String BUILD = "Build";
 
     /** Stores a feature toggle for defaulting to technical names in stages */
     boolean useTechnicalStageNames = false
 
     String getStageName(Script script, Map parameters, Script step) {
+        String stageName = null
         if (parameters.stageName in CharSequence) {
-            return parameters.stageName
+            stageName = parameters.stageName
+            stageName = replaceCentralBuild(stageName);
+            return stageName
         }
         if (this.useTechnicalStageNames) {
             String technicalStageName = getTechnicalStageName(step)
             if (technicalStageName) {
                 return technicalStageName
             }
         }
-        return script.env.STAGE_NAME
+        if (stageName == null) {
+            stageName = script.env.STAGE_NAME
+            stageName = replaceCentralBuild(stageName);
+        }
+        return stageName
+    }
+
+    private String replaceCentralBuild(String stageName) {
+        return CENTRAL_BUILD.equals(stageName) ? BUILD : stageName;
     }
 
     static String getTechnicalStageName(Script step) {